A nucleus has mass number and contains neutrons

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

Problem

A nucleus has mass number

A = 42

and contains

N = 24

neutrons. Which of the following symbols correctly represents this nuclide? (a)

_{18}^{24}\text{Ar}

(b)

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

(c)

_{24}^{42}\text{Cr}

(d)

_{19}^{42}\text{K}

Related theory

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