An atom has mass number A and atomic number Z.
How many electrons are revolving around the nucleus?

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Solution

Atomic number(Z)- The total number of protons in the nucleus of an atom gives us the atomic number of that atom.
Protons are positively charged subatomic particles present in the nucleus of an atom.
Here, the atomic number of the atom is Z.
Hence, it has Z numbers of protons present in the nucleus.
Any neutral atom has the same number of electrons as the number of protons.
Thus, It has Z numbers of electrons present in the atom.

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An atom has mass number A and atomic number Z.How many electrons are revolving around the nucleus?

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