Question

what is atomicity and mass number ​

Answer 1

Ans

Atomicity :- Atomicity is total number of atoms present in one molecule of an element, compound and substance.

Mass number. The mass number (symbol A, from the German word Atomgewicht (atomic weight), also called atomic mass number or

Mass number is an integer (whole number) equal to the sum of the number of protons and neutrons of an atomic nucleus. In other words, it is the sum of the number of nucleons in an atom. Mass number is often denoted using a capital letter A.

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Answer 2

Atomocity :

Atomicity is the total number of atoms present in one molecule of an element, compound or a substance. For example, in O2, there are 2 atoms of oxygen.

Mass Number

Total Number of Proton and neutron present in an nucleon.