907 views
0 votes
Definition of mass number​

User Ismael
by
3.7k points

2 Answers

3 votes

Answer:

The total number of protons and neutrons in a nucleus.

Step-by-step explanation:

I memorized it.

User Lante Dellarovere
by
3.2k points
3 votes

Answer:

Mass number of an atom is defined as the sum of the number of protons and number of neutrons.

User Jay Bharat
by
3.5k points