STD 11 - 3. Classification of elements and periodicity in properties — JEE STD 11 Science — Question

Statement $I$ : The metallic radius of $\mathrm{Na}$ is $1.86 \mathrm{~A}^{\circ}$ and the ionic radius of $\mathrm{Na}^{+}$is lesser than $1.86 \mathrm{~A}^{\circ}$.

Statement $II$ : Ions are always smaller in size than the corresponding elements.

In the light of the above statements, choose the correct answer from the options given below :

$(A)$ The compound is optically active

$(B)$ The compound possesses centre of symmetry

$(C)$ The compound possesses plane of symmetry

$(D)$ The compound possesses axis of symmetry

$(I)$  $\begin{array}{*{20}{c}}
  {O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {C{H_3} - C - C{H_2} - C - C{H_3}} 
\end{array}$

$(II)$ $\begin{array}{*{20}{c}}
  O \\ 
  {||} \\ 
  {C{H_3} - C - C{H_3}} 
\end{array}$

$(III)$ $CH \equiv CH$

$(IV)$ $CH_3-CHO$

Select correct answer from the codes given below :

Codes :