What is the difference between the mass number and the atomic number of an atom?

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Chemistry

11 November, 23:48

What is the difference between the mass number and the atomic number of an atom?

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Roberto · Answer 1

The atomic number of an atom is the number of protons inside in this atom.

Atomic number of an atom=Z

The mass number of an atom is the number of protons + number of neutrons in this atom.

mass number of an atom=A

A=Z+N

A=mass number.

Z=atomic number

N=number of neutrons.