What are most of the elements on the periodic table

Asked by admin @ 07/10/2021 in Chemistry viewed by 323 People

MOST elements on the periodic table are

A) gases
B) metals
C) nonmetals
D) rare earth elements
~~
(Use Graph) The periodic table organizes elements according to INCREASING
A) atomic mass.
B) energy level.
C) atomic number.
D) valence number.
~~
Elements are pure substances. They are organized in the periodic able. Each element has a unique atomic structure and chemical symbol. The chemical symbol is either one or two letters, the first letter of which is capitalized.
Can you identify the elements? Check all the symbols that represents single element.
CO
Ca
Fe
H2O
Si
Ne

Answered by admin @ 07/10/2021

Hi there!

For question 1, I'm going to say that most elements are metals. I know this based on various color-coded periodic tables that I've seen in the past - the most common color always represented metallic elements. The answer is therefore B.

For question 2, the answer would be atomic mass. We can see that the atomic mass increases as you go across and down the periodic table - the atomic number also represents the number of protons, which means that the atomic mass subtract the number of protons is the number of neutrons. The answer is A.

For question 3 the elements are: Ca, Fe, Si and Ne. If there are two capital letters in the chemical formula, then two different elements are present.

Hope this helps!

What are most of the elements on the periodic table

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