What is the relation between mass number and atomic number?

Type: MCQ • Marks: 1

A. Mass number = electrons + protons

B. Mass number = neutrons only

C. Mass number = atomic number - neutrons

D. Mass number = atomic number + neutrons

Explanation

Mass number A = Z + N, where Z is atomic number and N is neutron number.

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Class 9th Science (MCQ)

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