Which of the following statements are correct?
(i) $\mathrm{CCl}_{4}$ undergoes hydrolysis easily
(ii) Diamond has directional covalent bonds
(iii) Fullerene is thermodynamically most stable allotrope of carbon
(iv) Glass is a man-made silicate
The correct answer is
Observe the following reactions (unbalanced)
$ \begin{array}{r} \mathrm{P}_{2} \mathrm{O}_{3}+\mathrm{H}_{2} \mathrm{O} \longrightarrow X \\ \mathrm{P}_{4} \mathrm{O}_{10}+\mathrm{H}_{2} \mathrm{O} \longrightarrow Y \end{array} $
The number of $\mathrm{P}=\mathrm{O}$ bonds present in $X, Y$ are respectively
Observe the following species.
(i) $\mathrm{NH}_3$
(ii) $\mathrm{AlCl}_3$
(iii) $\mathrm{SnCl}_4$
(iv) $\mathrm{CO}_2$
(v) $\mathrm{Ag}^{+}$
(vi) $ \mathrm{HSO}_{4}^{-} $
How many of the above species act as Lewis acids?