Which of the following atoms contains the most neutrons?

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

Problem

Which of the following atoms contains the most neutrons? (1)

^{40}\text{Ca}

(2)

^{40}\text{Ar}

(3)

^{39}\text{K}

(4)

^{37}\text{Cl}

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