A nucleus represented by the symbol { }_{Z}^{ | vedclass

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(C) The number of protons in the nucleus of an atom is equal to the atomic number $(Z)$.The mass number $(A)$ of an atom is defined as the sum of the

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$Z$ protons and $A - Z$ neutrons

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(C) The number of protons in the nucleus of an atom is equal to the atomic number $(Z)$.The mass number $(A)$ of an atom is defined as the sum of the number of protons and the number of neutrons in the nucleus.Therefore, the number of neutrons is given by the difference between the mass number $(A)$ and the atomic number $(Z)$.$A = 	ext{Protons} + 	ext{Neutrons}$$Z = 	ext{Protons}$Substituting $Z$ for protons:$A = Z + 	ext{Neutrons}$$	ext{Neutrons} = A - Z$Thus, the nucleus has $Z$ protons and $A - Z$ neutrons.

$A$ nucleus represented by the symbol ${ }_{Z}^{ A } X$ has

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