Question

Name the following:
a) An element which forms the triple covalent bond.
b) An element which obtains the noble gas configuration of neon by losing three electrons.
c) An element which gains two electrons to obtain the noble gas configuration of neon.
d) Name a compound which is an exception to the octet rule.
e) In $S{O}_2$ molecule, which element is a donor of electrons.

Answer 1

(a) $N;N\equiv N;N_2$ (Nitrogen)

(b) ${AlCl}_3;{Al}^{3+}\left(10e^{-}\right);{3u}^{-}\left({18e}^{-}\right)$ ] Nobel gas configuration

(c) ${Na}_{2}O{O}^{2-}\left({10e}^{-}\right)$ Oxygen

(d) ${PF}_5$ (because ${}^{\prime }{P}^{\prime }$ has ${}^{\prime }10=5\times 2^{\prime }$ valence electron)

(e) ${SO}_2$ (surface is donor); $\epsilon n=S<0$