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ra1l [238]
3 years ago
10

What is the mass number of this atom? A.3 B.4 C.7 D.10

Physics
2 answers:
vaieri [72.5K]3 years ago
8 0
C. 7
The mass number of this atom is the number of protons and the number of neutrons combined, which in this case would be 3+4 or 7.

Hope this helps. 
Inessa [10]3 years ago
4 0
<span>What is the mass number of this atom?
</span>
<span>C.7</span>
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