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rusak2 [61]
3 years ago
13

The mass number is used to calculate the number of

Physics
2 answers:
timama [110]3 years ago
6 0
Atomic number is the answer
8_murik_8 [283]3 years ago
4 0
The atomic mass<span> of an element is the total </span>number of<span> protons and neutrons in the nucleus of the atom. 

Hoped this helped 
Happy Studying</span>
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