Which of the following elements has the lowest first-ionization energy?

CHEMISTRY · Single correct · A Level · Chemistry · Periodicity and periodic trends · Periodicity and periodic trends

Problem

Which of the following elements has the lowest first-ionization energy? (a)

\mathrm{Al}

(b)

\mathrm{Mg}

(c)

\mathrm{Na}

(d)

\mathrm{Si}