What is the atomic number of an element - SS3 Physics Atomic And Nuclear Physics Question
What is the atomic number of an element?
A
The number of electrons in the nucleus of an atom.
B
The number of protons in the nucleus of an atom.
C
The number of neutrons in the nucleus of an atom.
D
The sum of the number of protons and neutrons in the nucleus of an atom.
correct option: b
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