Answered

What do you call to the sum of the number of protons and neutrons?
.Atomie Number
Atomie Charge
Mass Number
Nucleous
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Sagot :

Angelynjalandoni86viz

Answer:

mass number

Explanation:

sum of the numbers of protons and neutrons in the nucleus ,is called mass number and expressed in amu is approximately equal to the mass of the atom.

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