Mass number is ........ - Vidyadip

MCQ

Mass number is $ ........$

✓
The sum of the total number of protons and neutrons present in the nucleus of an atom.
B
The electrons present in the outermost shell of an atom.
C
An atom of each element having a definite combining capacity.
D
The total number of protons present in the nucleus of an atom.

✓

Answer

Correct option: A.

The sum of the total number of protons and neutrons present in the nucleus of an atom.

The mass number is defined as the sum of the total number of protons and neutrons present in the nucleus of an atom.

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