- A$BF_3 , BrF_3$
- B$ICl_2^{\ominus}, BeCl_2$
- C$BCl_3 , PCl_3$
- D$PCl_3,NCl_3$
$BrF_3$ $sp^3d$ Bent $'T'$ shape
$IC^{\ominus}_2$ $sp^3d$ Linear
$BeCl_2$ $sp$ Linear
$BCl_3$ $sp^2$ Trigonal planar
$PCl_3$ $sp^3$ Pyramidal
$NCl_3$ $sp^3$ Pyramidal
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If molar mass of hydrochloric acid is $M.$
$\begin{array}{*{20}{c}}
{OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3}CHC{H_2}C{H_2}N{H_2}}
\end{array}$ $\xrightarrow[{triethyla\min e}]{{ethyl\,formate\,\left( {1\,equiv} \right)}}$
$Ca\left( s \right)|C{a^{ + 2}}_{\left( {aq.} \right)}||F{e^{ + 2}}_{\left( {aq} \right)}|Fe\left( s \right)$
$E_{C{a^{ + 2}}/Ca}^o = - 2.87\,V$ ; $E_{Fe/F{e^{ + 2}}}^o = 0.41\,V$


$R - C \equiv C - R\xrightarrow{{Pd/BaS{O_4}}}A$
$R - C \equiv C - R\xrightarrow{{Na/Liq.\,NH_3}}B$