johnzama60 johnzama60

20-05-2020
Chemistry

contestada

11. What is the mass number
of an element if its atom
contains 10 protons, 10
electron, and 12 neutrons?
A 12
C20
D. 32

Respuesta :

Crystalemerald Crystalemerald

20-05-2020

Answer:The mass numbr is 22

Explanation:

Mass number=number of protons+ number of neutrons....which is 10+12=22

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