Which one of the following pairs of nuclides are isotopes of the same element?

CHEMISTRY · Single correct · A Level · Chemistry · Atomic structure · Atomic structure

Problem

Which one of the following pairs of nuclides are isotopes of the same element? (a)

{}_{7}^{14}\mathrm{N}

and

{}_{8}^{14}\mathrm{O}

(b)

{}_{6}^{14}\mathrm{C}

and

{}_{7}^{15}\mathrm{N}

(c)

{}_{8}^{16}\mathrm{O}

and

{}_{8}^{18}\mathrm{O}

(d)

{}_{11}^{23}\mathrm{Na}

and

{}_{12}^{23}\mathrm{Mg}

Related theory

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