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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
No, CH3OH is not an element. It is a compound with the chemical formula CH3OH, which represents methanol, a type of alcohol.
What causes a glowing wooden splinter to ignite?
A glowing splinter ignites when the heat generated by oxidation of the wood reaches the ignition temperature of the wood itself, typically around 300-400 degrees Celsius. This causes the wood to undergo rapid combustion, producing flames and further heat.
What is the group number of alkali earth metals?
The group number of alkali earth metals is group 2 on the periodic table. These metals include beryllium, magnesium, calcium, strontium, barium, and radium. They are located in the second column from the left on the periodic table.
What group does argon belong to on the periodic table?
Argon (Ar, element number 18) is the last element in the third period of the periodic table.
Are the majority elements in the periodic table called a metals or b metalloids or c non-metals?
a) Metals. The majority of elements in the periodic table are classified as metals due to their characteristic properties such as high electrical conductivity, malleability, and luster. Metals are found on the left side and middle of the periodic table.
Atoms of the same element with different atomic masses?
Isotopes are atoms of the same element with different atomic masses, characterized by the number of neutrons in the nucleus. Despite having different masses, isotopes share the same number of protons and electrons. Certain isotopes may be unstable, leading to radioactive decay.
What are the two main types of element?
The two main types of elements are metals and nonmetals. Metals typically have properties like being good conductors of electricity, while nonmetals are typically poor conductors and can be found in various states like gases or solids.
Who created the first acceptable periodic table?
Dmitri Mendeleev is credited with creating the first widely accepted periodic table of elements in 1869. He arranged the elements according to their atomic mass and properties, predicting the properties of missing elements and leaving gaps for future discoveries.
What does tl stand for on the periodic table?
Tl stands for thallium on the periodic table. Thallium is a chemical element with the atomic number 81.
How many subatomic particles are there in the nucleus of a carbon atom?
In a 12C carbon atom, there are 6 protons, 6 neutrons, and 6 electrons. (98.8%)
In a 13C carbon atom, there are 6 protons, 7 neutrons, and 6 electrons. (1.2%)
In a 14C carbon atom, there are 6 protons, 8 neutrons, and 6 electrons.
There are only trace amounts in Nature of 14C carbon which is radioactive and decays with a halflife of 5730 years
Carbon-12, the most common isotope, has 6 Protons, 6 Electrons, and 6 Neutrons.
Does krypton have family or group name?
Krypton is a part of the family of elements known as the noble gases. They all lack odor and color, and they are barely reactive.
Is it possible for every element on the periodic table to exist as an ion?
None of the elements exist naturally as an ion, but pump'em full of enough energy and you can rip off every last one of their electrons. In fact, there is a state of matter attainable for every element called plasma. This is defined as the state in which all atoms of the substance are ionized.
Can ionization energies determine an element group?
Yes, ionization energies can be used to determine the group of an element on the periodic table. Elements in the same group have similar trends in ionization energy, with a general decrease moving down a group due to the increase in atomic size. This pattern allows us to predict an element's group based on its ionization energy values.
Which properties of alkali metals unusual metals?
Alkali metals are unusual because they are soft, highly reactive metals with low melting points and densities. They also have a low ionization energy, which means they readily lose their outermost electron to form positive ions. Additionally, they exhibit a strong tendency to form ionic compounds with nonmetals due to their high reactivity.
When an element decays what does it lose?
- in alpha decay it loses a helium nucleus (2 protons, 2 neutrons)
- in beta decay a neutron converts to a proton and it ejects an electron and a neutrino
- in gamma decay an excited nuclear state relaxes and a gamma photon is emitted
- in "k-capture" an inner electron is eaten by the nucleus converting a proton to a neutron and it ejects a neutrino
there are also a few other mechanisms.
Does group 18 on the periodic table lose or gain electrons?
Group 18 elements, also known as noble gases, typically do not gain or lose electrons because they already have a full outer shell of electrons (8 in the case of helium, 8 for all other noble gases). This stability makes them very unreactive and inert.
What family is the element dubnium?
1. It is supposed that dubnium is similar to tantalum; it is placed in the group 5 and period 7 of the periodic table of Mendeleev.
2. Other transactinoids chemical elements are: rutherfordium, seaborgium, bohrium, hassium, meitnerium, etc.
Why does the group 7 elements not have many uses?
The answer to this question depends on which version of the periodic table you're referring to.
According to IUPAC, Group 7 would consist of manganese (Mn), technetium (Tc), rhenium (Rh), and bohrium (Bh). This group does not have many uses because other than manganese, the others are either rare or synthetic. Manganese is used as an alloying material in steel and is crucial to Vitamin B1.
If all of the transition metals are considered to be one group (or the old IUPAC/CAS method is used), then group 7 can refer to the halogens, or fluorine (F), chlorine (Cl), bromine (Br), Iodine (I), and Astatine (At). These elements are highly reactive and are famous for producing salts when combined with Group 1 or Alkali metals. These elements may not have many uses alone, but they have a crucial role in chemistry.
What are all the symbols on the period table?
On the Period Table there is all these:
Non-Metals:
O (oxygen) He (Helium) B (Boron) C (Carbon) N (Nitrogen) F (Fluorine) Ne (Neon) Si (Silicon) P (Phosphorus) S (Sulfur) Cl (Chorine) Ar (Argon) As (Arsemic) Se (Selenium) Br (Bromine) Kr (Krypton) Te (Tellurium) I (Iodine) Xe (Xenon) At (Astatine) Rn (Radon) H (Hydrogen)
Metals:
Li (Lithium) Be (Beryllium) Na (Sodium) Mg (Magnesium) K (Potassium) Ca (Calcium) Sc (Scandium) Ti (Titanium) V (Vandium) Cr (Chromium) Mn (Maganese) Fe (Iron) Co (Cobalt) Ni (Nickel) Cu ( copper) Zn (zinc) Al (Aluminium) Ga ( Gallium) Ge (Germanium) Rb (Rubidium) Sr (Strontium) Y (Yttrium) Zr (Zirconium) Nb (Niobium) Mo (Molybdenium) Tc (Technetium) Ru (Ruthenium) Rh (Rhodium) Pd (Palladium) Ag (Sliver) Cd (Cadmium) In (Indium) Sn (Tin) Sb (antimony) Fr (Francium) Ra ( Radium) Ac (Actinium) Rf (Rutherfordium) Db (Dubnium) Sg (Seaborgium) Bh (Bohrium) Hs (Hassium) Mt (Meitnerium) Ds (Damstadtium) Rg (Roentgenium)
And that is the metal's and the non-metals in the period table enjoy (:
Phosphorus is very important and necessary for maintaining a healthy diet so it is important to know which foods it can be found in. Phosphorus can be found in many diverse foods such as wheat germ, wheat bran, all bran cereals. It is also to be found in many seeds and nuts such as almonds, cashews, peanuts, Brazil nuts sunflower seeds and pumpkin seeds. You can find it in meat and fish products such as chicken, turkey, beef, salmon, halibut, most fatty fish, kidney and liver. Not to mention it is to be found in many legume/bean products including lentils. You can also find it in fruit and vegetable products such as carrot, cauliflower, corn, peas, potato and banana are good sources.
Lets just think about calcium though, phorsphorus and calcium coexist so they are to be found in many of the same sources. This means that phosphorus is found in most dairy products, except their fatty parts like cream and butter for example. So look for phosphorus in milk, and skim milk, yogurt, and cheeses such as mozzarella and cheddar. Since eggs are a good source of calcium and phosphorus try squeezing more eggs into your diet.
What element is used to prevent tired blood?
Iron is the element used to prevent tired blood, as it plays a crucial role in the production of hemoglobin, which helps red blood cells carry oxygen throughout the body. A deficiency in iron can lead to anemia, causing symptoms like fatigue, weakness, and shortness of breath. Consuming iron-rich foods or supplements can help prevent tired blood.
What is the pattern of vertical columns on the periodic table of elements?
The periodic table organizes elements into vertical columns called groups or families. Elements within the same group share similar chemical properties and have the same number of electrons in their outermost shell, also known as the valence shell.
