kianakilbourn7 kianakilbourn7

15-12-2021
Physics

contestada

If the element gallium has an atomic number of 31 and an atomic mass of 70, how many neutrons does it have?
70
O a
O b
O
31
C
101
Od
39
M

Respuesta :

princessfannin1 princessfannin1

17-12-2021

Answer:

The answer is 39.

Explanation:

The atomic number refers to the number of protons and the atomic mass is the sum of the protons and neutrons. So, you would just do 70 - 31 and that gets you 39.

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