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(a) Define the terms proton number, nucleon number. .
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(a) Define the terms
proton number,
nucleon number.
.

User Kailin
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Proton number is the number of protons in the nucleus of an atom
Also known as atomic number

Nucleon number is the total number of neutrons and protons present in the nucleus of an atom
Also known as mass number
User Mark Kenny
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