How many of the following species have, the given conditions below altogether
i) Paramagnetic molecule/species
ii) Linear structure
${\mathrm{He}}_2^{+},{\mathrm{H}}_2^{+},{\mathrm{H}}_2^{-},{\mathrm{NO}}_2;{\mathrm{OF}}_2,{\mathrm{ClO}}_2,\mathrm{NO},{\left[\mathrm{Ag}{\left(\mathrm{CN}\right)}_2\right]}^{-}$

Identify correct number of statements
$\left(\mathrm{i}\right)$ Chloral hydrate shows intramolecular $\mathrm{H}$ –bond.

$\left(\mathrm{ii}\right)$ Uni-negative anion of caro’s acid shows intramolecular $\mathrm{H}$ –bond

$\left(\mathrm{iii}\right)$ Order of bond angle ${\mathrm{Cl}}_2\mathrm{O}>{\mathrm{F}}_2\mathrm{O}$

$\left(\mathrm{iv}\right)$ Order of bond angle ${\mathrm{F}}_2\mathrm{O}<{\mathrm{H}}_2\mathrm{O}$

$\left(\mathrm{v}\right)$ Order of bond angle As${\mathrm{AsI}}_3>{\mathrm{AsBr}}_3>{\mathrm{AsCl}}_3$

$\left(\mathrm{vi}\right)$ ${\mathrm{BF}}_3, {\mathrm{CH}}_4, {\mathrm{PCl}}_5, {\mathrm{SF}}_6, {\mathrm{IF}}_7, {\mathrm{XeF}}_4$ all are Non–polar

$\left(\mathrm{vii}\right)$ p-nitrophenol has less boiling point as compared to $\mathrm{o}$ –nitrophenol

$\left(\mathrm{viii}\right)$ In trisilyl amine ${\left({\mathrm{SiH}}_3\right)}_3\mathrm{N}$, the $\mathrm{Si}—\mathrm{N}$ bond length is lesser than expected value

$\left(\mathrm{ix}\right)$The $\mathrm{Be}$ atom in ${\mathrm{BeCl}}_2\left(\mathrm{s}\right)$ is ${\mathrm{sp}}^3$ hybridised.

Consider the following statement and arrange in the order of true / false.

${\mathrm{S}}_1$: In ${\mathrm{SnCl}}_2$, the bonding takes place in the ground state and the bond angle $\mathrm{Cl}-\mathrm{Sn}-\mathrm{Cl}$ is slightly less than $120°$.

${\mathrm{S}}_2$: The molecular geometry of ${\mathrm{XeF}}_7^{+}$ is pentagonal bipyramidal having two different $\mathrm{Xe}-\mathrm{F}$ bond lengths.

${\mathrm{S}}_3$: In ${\mathrm{SF}}_4$, the bond angles, instead of being $90°$ and $180°$, are $89°$ and $177°$ respectively due to the presence of a lone pair.