ramiyalawson018 ramiyalawson018

19-05-2021
Physics

contestada

Calculate the mass number of an atom with 8 protons, 12 neutrons and 10 electrons

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brownalyssa03 brownalyssa03

28-06-2021

Answer: 20

Explanation: Mass number is the number of neutrons plus the number of protons. 8 + 12 gives 20.

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MisterBrainly MisterBrainly

02-08-2022

Mass number

No of protons+No of neutrons
12+8
20

Mass number is 20

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