Jjshortmuffin04 Jjshortmuffin04

22-10-2020
Chemistry

contestada

What is the mass number of a cobalt atom that has 27 protons and
30 neutrons?

Respuesta :

Аноним Аноним

22-10-2020

Answer:

all u need to do is this 27 + 30 = 57.

Explanation:

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god1630 god1630

22-10-2020

Mass number is 57 since you add the 27 protons and the 30 neutrons

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