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Periodic Table

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Parent Category: Chemistry
The Periodic Table is a tabular arrangement of the elements in increasing order oftheir atomic numbers, so that elements with similar properties are in the same column. There are 18 columns, called groups, and seven rows, which are called periods, in the modern periodic table. Questions about the Periodic Table: its history and creation, trends, groups/families, and periods are asked in our Periodic Table category.
It might be possible, you need to check with a professional Insurance Agent to help you. It depends on the number of employees and which ones are out of state.Try going to then scroll down to the link for NAHU Agent finder
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Reaganomics (identified with the 40th President, from 1981 to 1989) was referred to as "supply side" economics (or the critical label trickle down) because its primary aim was to increase capital and capital expenditures, intending to fight a slowing economy and eventually increase government revenu…
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Answer Cloudy water is NOT NECESSARILY algae growth. Cloudy water can be caused by LOTs of things. Algae, poor filtering, bad circulation, a dirty filter, poor water balance
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The two big differences are that Substance has an improved third person camera and an online game mode. Also included are ports of the original MSX versions of 'Metal Gear' and 'Metal Gear 2: Solid Snake', a third disc containing reworked footage from MGS3 to create a 3 hour film, more Snake Vs. M…
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Modern Law of the Elements The modern periodic law states that, "the physical and chemical properties of elements are periodic functions of their atomic numbers." It is important to remember that before our "modern" periodic law, the Periodic Table of Elements was organized according to increasin…
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John Dalton did not marry.
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I can tell you (only one that is from philippines)she is JANE MARIE but i dont know the others they are many I was talking to the USA scouts for their olympic squad and Jake Thomas is an early favorite to be their number 1 player this year.
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There is one electron per hydrogen atom, and two atoms per molecule of hydrogen. So if you mean hydrogen gas, there are two electrons in it.
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There are several elements that have a symbol based on their atomic name. Perhaps the most well known is sodium, which as the symbol Na. Others include gold (Au), potassium (K), silver (Ag) and tungsten (W).
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Vinegar's formula is very dilute CH3COOH. Vinegar is mainly water (H2O), but is also comprised of acetic acid (the boxlike acid which gives vinegar its pungent/sour smell). Vinegar is a liquid produced by aerobic fermentation (meaning: it needs oxygen) of alcohol into acetic acid as well as other …
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Chemical Changes As opposed to a physical change, chemical changes are present when the substance undergoes a chemical reaction and produces a new substance. A chemical change is a chemical reaction that will always take place for there to be a chemical change. Signs that a reaction is taking place:…
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AU (hey you) buy some gold!" AU is the symbol for gold's Latin name Aurum. --- "The brightest investment in today's markets." (works with photo or video of shining coins)
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Answer There are numerous was to categorize different acids. Here are a few different ways you can divide up different types. There are two general types of acids: strong acids and weak acids. There are only a few strong acids, and so ALL the others are considered weak. See the Related Questions…
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Name Origin: From the Latin word alumen, meaning a substance having an astringent or bitter taste Named by Sir Humphry Davy who had trouble settling with a name. He based the name on the mineral called alumina which was named by chemist Joseph Black in 1790. Joseph Black derived the name alumina fro…
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They are called groups or families. Often the elements that are found in the same group as each other have similar chemistry and reactivity. Each column is named as follows, going from left to right across the periodic table (see the Web Links to the left for a periodic table). The names in bold a…
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The atomic number of hydrogen (H) is 1 The atomic weight of H is 1.00794 grams per mole. Hydrogen gas exists as a diatomic molecule: H2. See the Web Links to the left of this answer for a periodic table with more information about this element! The atomic number of an element = the number of…
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The atomic number of lithium (Li) is 3. The atomic weight of Li is 6.941 amu, and the molar mass 6.941 grams per mole. See the Web Links to the left of this answer for a periodic table with more information about this element!
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The atomic number of Boron (B) is 5. The atomic weight of B is 10.811 grams per mole. See the Web Links and the Related Questions to the left of this answer for a periodic table and more information about this element.
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The atomic number of fluorine (F) is 9.Fluorine is the chemical element with symbol F and atomic number 9.
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The atomic number for aluminum (aluminium, symbol Al) is 13. This is the number of protons, also known as the "element number." Atomic mass/weight is 26.981 (most aluminum is 27Al) The atomic weight of Al is 26.981539 amu, and the molar mass 26.981539 grams per mole. (see also the related link b…
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The atomic number of silicon (Si) is 14. The atomic weight of Si is 28.0855 grams per mole. See the Web Links and the Related Questions to the below this answer for a periodic table and more information about this element.
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The atomic number of sulfur (S) is 16.The atomic weight of S is 32.066 grams per mole. See the Web Links to the left of this answer for a periodic table with more information about this element! It is 16.
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The atomic number of calcium (Ca) is 20.The atomic weight of Ca is 40.078 grams per mole.See the Web Links and the Related Questions to the left of this answer for a periodic table and more information about this element. 20
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Answer The atomic number of iron (Fe) is 26. The atomic weight of Fe is 55.847 grams per mole. See the Web Links to the left of this answer for a periodic table with more information about this element!
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The atomic number of Copper (Cu) is 29. See the Web Links for more information about copper to the left of this answer.
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No element in the periodic table has similar properties to groups 1A and 7A at the same time, because they have completely opposite properties to each other.Group 1A are all metals, while group 7A is staring with Flourine gas; chlorine, in nature it is found in the combined state only, chiefly with …
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Elements in a group or column share the same valence electron configuration. This means they all have similar reactivity. See the Related Questions to the left for more information.
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Chemical To determine it, you must alter the identity of the substance. See the Related Questions link to the left of this answer: "What is the difference between a chemical and physical property?"PhysicalElements cannot be altered, without disrupting the physical structure of the atom, so the atom…
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The p-block metals are aluminum, gallium, indium, thallium, lead, tin, bismuth, and polonium. also, ununtrium, ununquadium, and ununpetium are sometimes comsidered p-block metals, although they are man-made.
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Hydrogen is the most abundant element in the universe.
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Group 1The first vertical column or group, Group 1, the alkali metals, has the most elements in it (7, if hydrogen is included).
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Answer This all depends on the element's atomic number (number of protons). Since atoms have the same number of protons as they do electrons, the atomic number is essentially equal to the number of electrons as well. For example Aluminum atomic There are lists, but you can just tell anyway accor…
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krypton is present in the air at about 1 ppm. The atmosphere of Mars contains a little (about 0.3 ppm) of krypton. It is characterised by its brilliant green and orange spectral lines. The spectral lines of krypton are easily produced and some are very sharp. In 1960 it was internationally agreed th…
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Yes, salt is denser.
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Fluoride is used for dental purposes, like in toothpaste. It is also used in public water facilities to supposedly battle tooth decay, even though it has been shown to harm instead. It is also used in rocket fuels; it helps other materials to burn, like oxygen does. They (compounds of fluorine) ar…
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Aluminum is used everywhere! Aluminum is used in all kinds of items that we all use every day. Just a few are: Motors for cars Frames on bikes Brake handles Toolscatsdogs Conductors for electricity Solid fuel stabilizer Anti-persperant in deoderant Aluminum is also used to make planes becaus…
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Before writing a chemical reaction, you must know a few things. You must know what the reactants are, and what the molecular formula of each one is. You must also know what the products of the reaction are, and how to write the molecular formulas for the products. Then you can go about writing the e…
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A periodic table is a tabular display of the chemical elements, organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties. Elements are presented in order of increasing atomic number. The periodic table is a table of the chemical elements, often show…
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indium has 49 protons, not electrons. strontium: group 2 peiod 5 is the closest Answer Indium has 49 electrons
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Atomic number 80 Atomic mass 200.59 g.mol -1 Electronegativity according to Pauling 1.9 Density 13.6 g.cm-3 at 20°C Melting point - 38.9 °C Boiling point 356.6 °C Vanderwaals radius 0.157 nm Ionic radius 0.11 nm (+2) Isotopes 12 Electronic shell [ Xe ] 4f14 5d10 6s2 Energy o…
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it is because it got its name from greek
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The mass number represents the weight of the protons and neutrons in atomic mass units (AMUs). One AMU is equal to one proton or neutron. The average mass of all isotopes of the element - apex.
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The so-called noble or inert gases are in Group 18, the last group on the right of the periodic table of the elements.
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The different 7 main types of chemical reactions are: Exothermic Endothermic Oxidation Neutralization Displacement Reduction Decomposition Electrolysis Hope that helped :)
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Methane is a chemical compound so it does not have an atomic number, but it does have a molecular formula, which is written as CH4. Methane is composed of one carbon atom (atomic number 6) bonded to four hydrogen atoms (atomic number 1). The molar mass of methane is: 4 * 1.0079 + 12.011 = 16.042…
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Moseley rearranged the periodic table to be in a more logical state. He arranged them according to atomic number. Check the related link below.
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Elements in the modern periodic table are arranged by atomic number wheras Mendeleev didn't know anything about the atomic structure of the atom.
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Royal Doulton is known for a creating a variety of fancy and expensive figurines. The 1954 fortune teller figurine is highly collectable, selling for 600 dollars online.
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A soft metal is easy to dent, work, or cut without shattering; malleable. Some soft metals are gold, silver, aluminum, and lead.
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Noble gasses (group 8) are the least reactive elements in the periodic table because they have a full valence shell. The right-most column, Group 8*, or the noble gases, is the least reactive elements in the periodic table. In newer version of periodic table by IUPAC, its the group 18; whereas i…
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See Periodic Table Link Under the Web Links to the left of this answer, click the link for a periodic table that indicates which elements are metals, metalloids, and non-metals. There are many metals (too many too just list out here!).
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This one also based on chemistry. Atomic number is made by number of protons in a atom. Periodic table based on atomic number.
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Because Hydrogen is in the same group (I) as the alkali metals (Li, Na, K, etc.) without being a metal! Hydrogen and periodic table Hydrogen (H) is separated as it has only 1 electron and so exhibits some unique behavior. Most elements lose or gain electrons to reach a noble gas configuration. Mo…
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Atomic number and electron configuration Elements in the periodic table are arranged in order of increasing atomic number (which is just the number of protons found in the nucleus of that element). Starting with hydrogen (H) with only 1 proton and reading left to right and then down, the atomic numb…
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The modern periodic law states that, The properties of the elements are the periodic function of there atomic number not atomic weights.
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Inert pair effect is a term often used to describe valence electrons in an s orbital penetrating to the nucleus better than electrons in p orbitals making them more tightly bound to the nucleus due to poor shielding effect offered by the inner sub-shells/orbitals and causing bonds involving these el…
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The liquid element mercury was isolated by the ancient Chinese and the Egyptians, probably from the mineral cinnabar (mercuric sulfide). Mercury was also refined and used in Mesoamerica by the Maya, independently of the Chinese discovery. While some early users imagined that it had medicinal proper…
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Follow These 4 StepsUse these simple steps to determine the formal charges of each atom in a Lewis dot structure:Step 1: For each atom in the Lewis dot structure, count the number of valence electrons for that atom (as if it just an atom by itself). See the Related Questions links at the bottom of t…
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I dont know i guess he was just a smart man
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Two ions are said to be isoelectronic with each other if they have the same number of valence electrons and the same structure, regardless of the nature of elements involved. some examples are:cations like K+, Ca2+,Sc3+CO, N2,valence electrons of C- 4, valence electrons of O -6, total num-10valence …
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Answer Here are some things you can determine about an element using the periodic table. Not all periodic tables have the same information though. Look at the Web Links to the left for some links to very good periodic tables that have lots of useful information! Also the Related Questions to t…
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Hydrogen The boiling point of H2 is 20.27 K and the boiling point of O2 is 90.18 K.
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Gold You can find this on the periodic table of the elements. The element with atomic number 79 is gold, Au.
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Electron screening is the best reason for there being more reactivity as an investigator looks down the Group 1 elements, which are the Alkali metals. Let's take a step back and then come up to speed on this one. When any of the alkali metals react with water, they form a metal hydroxide, and that G…
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halogens
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The atomic number tells you how many protons and electrons are in a specific element.Atomic number tells us about protons. Number of protons that atom contains.
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These are the first 20 elements in/on the periodic table: Hydrogen Helium Lithium Beryilium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminum Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium
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The name of an element depends on who discovered the element and when. Often the names have roots in other languages such as Greek or Latin. Some elements are named after the person who discovered the element or also after other famous scientists to honor that person. For many elements, the symbol …
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In total there are 118 elements known or predicted to exist, and they appear on the modern Periodic Table. Only 114 of the elements are named, having been fully authenticated by isolation, or by detection of decay products. The others are given provisional (numerical) names with their atomic numbe…
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The identity of an element is determined solely by the number of protons in its nucleus. Only that and nothing else.
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used in tooth pastes and rocket fuel.
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An element is a substance that cannot be broken into simpler substances by chemical methods, such as Neon or Oxygen.The periodic table contain all known chemical elements.
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first made around 1700's and was updated around 1990 and was organized 1870
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Elements that I would think are key to personnel indicators are : 1. Analysis Techniques 2. Area of Experience 3. Analysis Planning 4. Strategic Thinking 5. Advocate and Adviser 6. Ability to Learn It all depends of what the individual thinks are key aspects.
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Metals are located on the left side of the periodic table.
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Answer These elements all want to lose 1 electron to have a noble gas electron configuration and are thus extremely reactive, particularly with water. See the Related Questions to the left for more information about the Group 1 alkali metal elements.
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The atomic number of gold (Au) is 79. The atomic weight of gold is 196.9665 grams per mole. Gold has 79 protons, 118 neutrons and 79 electrons. See the Web Links and the Related Questions to the left of this answer for a periodic table and more information about this element.Gold is a very rare elem…
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Chemical Properties Metals Usually have 1-3 electrons in their outer shell. Lose their valence electrons easily. Form oxides that are basic. Are good reducing agents. Have lower electronegativities. Nonmetals Usually have 4-8 electrons in their outer shell. Gain or share valence electrons…
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Answer Hydrogen is the lightest element in the Periodic Table. See the Related Questions link for more information about hydrogen.
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there are 13 futuristic elements
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Ionic compounds form a definite crystal structure.
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The verticle column of the periodic table is called a family or a group.
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Answer Lithium metal exists as a solid at room temperature. However, lithium metal is highly reactive and is rarely found as a neutral atom. Instead it is usually found as an ion, Li+, either dissolved in solution or in ionic compounds.
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Carbon is a nonmetal. It's very light excellent for making fishing rods as well as numerous other products.
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Mix 8 parts of it with 2 parts vinegar or Glycerine or vodka.
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The answer varies depending on whether or not you are dealing with an ionic compound or a pure substance. Other substances will not fit the following rules. As usual, transition metals often find exception. As you go down a column in the periodic table, the atomic radius increases and melting poin…
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what were five periods in the development in chemistry?
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Periodic or cyclic neutropenia is a disorder which causes frequent infections. This condition in which neutrophils, a type of white blood cell, decrease on a regular basis is extremely rare and has been shown to be a genetic mutation.
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Metals aren't invented, they just occur . Man just discovered them.
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sourcse of obligation? what are the elements of obligation?
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Today 118 chemical elements have been named; 92 are naturally occurring
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Answer water and salt are some examples of inorganic compounds that we can use in our daily lives. because both of them do not have carbons. water=H2O. salt=NaCl or sodium chloride. Inorganic Compound subo tite and kantot me
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As you go down group 1 (the alkali metals) the melting point decreases as the atomic radius increases.[1] For example Lithium has an electronic configuration of 2,1 so it only has two shells so there are stronger forces of attraction between the shells which means more energy is required to break th…
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Answer The element uranium (U) has 92 protons in its nucleus. That's where its atomic number comes from. When we see an isotope of an element written in "standard" form, the element name or symbol will be followed by the atomic mass (atomic weight) of the isotope. This number is basically the num…
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An element is something that cannot be broken.
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For heating small quantities of solids to very high temperatures
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coating soda cans, and coating other metals to prevent corosion.
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