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

asked Mar 26, 2021 183k views

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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

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6 votes

Answer:The mass numbr is 22

Step-by-step explanation:

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

Md Zahid answered Apr 1, 2021

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