The introduction of a neutron into the nuclea | vedclass

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(D) The atomic weight (or mass number) of an atom is defined as the sum of the number of protons and neutrons in the nucleus. Adding a neutron increas

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Its atomic weight

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(D) The atomic weight (or mass number) of an atom is defined as the sum of the number of protons and neutrons in the nucleus. Adding a neutron increases the total number of nucleons by $1$,which results in an increase in the atomic weight of the atom. It does not change the number of protons (atomic number) or the number of electrons,so the chemical properties remain the same.

The introduction of a neutron into the nuclear composition of an atom would lead to a change in

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