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- What are the 20 lightest elements? - Answers
What element is the lightest of the elements? Hydrogen is the lightest of all elements According to the Periodic Table, its atomic weight is 1 00794 u, even lighter than helium
- Why does carbon dioxide not appear on the periodic table?
The periodic table lists only elements, which are pure substances made up of one type of atom Water is composed of hydrogen and oxygen atoms, while carbon dioxide consists of carbon and oxygen atoms
- Why can helium be placed in group II? - Answers
What is the position of helium on the periodic table snd its chemical properties based on that position? Helium is placed at the top of the group-18 in periodic table
- What is each vertical column in the periodic table? - Answers
What is a group in periodic table? In the periodic table, a group is a vertical column of elements that share similar chemical properties due to having the same number of valence electrons
- What is OH in periodic table? - Answers
What is the OH in periodic table? OH is the chemical formula for the hydroxide ion, which consists of one oxygen atom and one hydrogen atom In the periodic table, oxygen is in group 16 and
- Why is mercury blue on the periodic table? - Answers
The only other element on the periodic table that is liquid by itself at room temperature is bromine, but mercury is the only metal liquid at room temperature
- What elements are least reactive on the periodic table?
The two most reactive groups of elements in the periodic table are the alkali metals and the halogens Halogens are nonmetals located in group 17 of the periodic table and include elements like
- What is the chemical symbol CI? - Answers
The closest would Cl, which is chlorine, number 17 on the periodic table Beryllium's chemical symbol is Be The chemical symbol for iron is Fe and the chemical symbol for nickel is Ni
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