Question

give the relation between atomic number and atomic mass of light elements​

Answer 1

Explanation:

Atomic number is actually the number of protons in an atom while mass number is the number of nucleons i. e, number of protons plus the number of neutrons.

Basically, Mass number = Atomic number + No. of neutrons

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Answer 2

Atomic number (Z) is total no of proton present in nucleus and atomic mass (A) is total no of proton and neutron present in nucleus.

For light atoms till atomic number 20, generally atomic mass is twice the atomic number

A=2ZA=2Z as n=pn=p.

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