Nicoloveganlee Nicoloveganlee

16-08-2016
Chemistry

contestada

if an atom contains 12 protons and 10 neutrons, what's its mass number?

a. 12
b. 10
c. 22
d. 2

Respuesta :

Willchemistry Willchemistry

16-08-2016

A = Z + n

A = 12 + 10

A = 22

Answer C

hope this helps!

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