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Periodic Table
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.
11,356 Questions
What are the elements of dragonfable?
well the most common elements are:earth, wind, fire, ice, water, energy, light, darknesss, death and evil (all slightly different) but there are also element bacon,metal, silver, nature and a mysterious element ?????.well there's my answers. if you need more info on the game just send me an e-mail at adomath50@yahoo.com
Identify chemical symbol and charge for hydrogen?
Hydrogen is identified with a 'H' symbol and if dissolved in water it have a negative charge
What is the common name for group 1 elements?
The common name for Group 1 elements is alkali metals. These elements include lithium, sodium, potassium, rubidium, cesium, and francium, and they are highly reactive with water.
What does AB stand for on the periodic table?
In the CAS system the letters A and B were designated to main group elements (A) and transition elements (B).
Why does the periodic table have over 110 elements when only 90 occur naturally on Earth?
The periodic table lists all elements that are possible, i.e. those with an integral number of protons in the nucleus of its atoms.
Some of these are extremely rare, at least on Earth, such as technetium (43), promethium (61), neptunium (93), and plutonium (94). Others, mostly radioactive isotopes with more than 83 protons, have not been found anywhere on Earth, but can be synthesized using nuclear collisions between other elements. So far, all but five or six of the 118 have been named, having been created or observed for at least a few atoms.
The formula for sodium chloride is NaCl. This means that for every one sodium ion, there is one chloride ion. The ratio is 1:1, so the numbers of each ion in a crystal of NaCl should be equal.
How are the topics of ion formation and periodic trends related?
Periodic trends affect how certain elements on the periodic table react with each other. For example, Ionization energy tend : metals want to give off electrons , non metals want to gain electrons. This trend is essentially which elements are likely to react together and how they would react together, which is essentially ion formation (gain or loss of electrons through a reaction).
Which class of nonmetals is the most reactive?
The halogens are the most reactive class of nonmetals due to their high electronegativity and tendency to gain electrons to achieve a stable electron configuration. This results in them readily forming compounds with other elements.
Ununquadium is the temporary name of a radioactive chemical element with the temporary symbol Uuq and atomic number 114. There is no proposed name yet, although Flerovium (after Soviet physicist Georgy Flyorov, the founder of the Joint Institute for Nuclear Researchin Dubna, Russia, where the element was discovered) has been discussed in the media.
About 80 decays of atoms of Ununquadium have been observed to date, 50 directly and 30 from the decay of the heavier elements Ununhexium and ununoctium. All decays have been assigned to the five neighboring isotopes with mass numbers 285-289. The longest-lived isotope currently known is 289Uuq with a half-life of ~2.6 s, although there is evidence for a nuclear isomer, 289b Uuq, with a half-life of ~66 s, that would be one of the longest-lived nuclei in the Super heavy element region.
Chemical studies performed in 2007 strongly indicate that ununquadium possesses non-eka-lead properties and appears to behave as the first superheavy element that portrays noble-gas-like properties due to relativistic effects.
Can you Draw a Bohr model of thorium?
I can't draw images, but I can describe it to you! In a Bohr model of thorium, there would be 90 protons and 90 electrons. The electrons would be arranged in different energy levels or shells, with the innermost shell holding 2 electrons, the second shell holding 8 electrons, the third shell holding 18 electrons, and so on.
The second period at the bottom of the table is called the?
The second period at the bottom of the table is called the lanthanide series or the lanthanoid series. It consists of 14 elements with atomic numbers 57 to 70 and is located below the main body of the periodic table.
Why is CS called carbon sulfide not carbon monosulfide?
The compound CS is called carbon disulfide, not carbon monosulfide, because it consists of two sulfur atoms and one carbon atom. The prefix "di-" is used to indicate the presence of two sulfur atoms in the compound.
What is a mixture that is the same homogenous?
A homogenous mixture is a combination where the components are evenly distributed throughout, resulting in a uniform composition. An example of a homogenous mixture is a solution of salt dissolved in water.
I think it's iron dissolved in water but even I'm not sure. I've been trying to find the answer so I can progress in the 39 clues.
Iron Solute is Iron dipped in a Aluminum Alloy Solution {AAS}.
The elements on the left side of the table are called?
The elements on the left side of the periodic table are called metals. These elements are typically shiny, malleable, and good conductors of heat and electricity. Examples of metals include iron, gold, and copper.
The suffix -ion is used to form nouns, indicating an action, condition, result, or state. For example, "celebration" refers to the action of celebrating, while "destruction" indicates the result of something being destroyed.
Is sawdust an element compound or a mixture and how do you know which it is?
Sawdust is a mixture because it is composed of different elements and compounds, such as cellulose, lignin, and hemicellulose. Mixtures can be separated into their individual components through physical means, such as filtering or distillation, without changing the properties of the substances. Elements and compounds, on the other hand, combine in fixed ratios and cannot be separated into simpler substances by physical means.
Where is the type location for the Mississippian Period?
The Mississippian Period is named after the Mississippi River region in the United States, where the distinctive cultures and societies of this time were first identified and studied. Its type location is considered to be Cahokia, a large pre-Columbian settlement near present-day St. Louis, Missouri.
Where does the Atomic number come from and why is it important?
The atomic number indicates the number of protons in an atom's nucleus, which determines its identity as an element. It is crucial because it helps to distinguish one element from another on the periodic table and influences the atom's chemical properties.
Is antimony metallic or nonmetallic?
Antimony is a metalloid which means that it has metallic and nonmetallic properties and it is element 51 in the periodic table lying in the diagonal metalloids in the p group. The metallic and nonmetallic properties may be, for example, that it is grey and shiny like a metal but it may also be brittle and not conduct heat and electricity like a nonmetal.
Why is technetium similar to manganese?
Technetium and manganese are both transition metals, which means they have similar electron configurations and exhibit some similar chemical properties. They both can exist in multiple oxidation states, showing variable oxidation numbers. This similarity arises from their position in the periodic table and their ability to have partially filled d orbitals.
How much does ununoctium cost?
Ununoctium is a highly unstable and synthetic element that is not available in large enough quantities to have a market price. Its extreme instability and short half-life make it very difficult and costly to produce.
What is an example of a binary molecular compound?
A binary molecular compound consists of two elements that are covalently bonded. Examples include carbon dioxide (CO2), water (H2O), and methane (CH4).
