Which of the following species must depict more than eight electrons around its…

CHEMISTRY · Single correct · A Level · Chemistry · Bonding · Bonding

Problem

Which of the following species must depict more than eight electrons around its central atom in the dominant Lewis structure? (a)

\mathrm{NO_2^-}

(b)

\mathrm{BF_3}

(c)

\mathrm{PF_5}

(d)

\mathrm{CO_2}