Identify the isobar of from the following options:

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

Problem

Identify the isobar of

^{40}_{18}\mathrm{Ar}

from the following options: (a)

^{39}_{18}\mathrm{Ar}

(b)

^{39}_{17}\mathrm{Cl}

(c)

^{40}_{19}\mathrm K

(d)

^{42}_{18}\mathrm{Ar}

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