MCQ
Which element having following electronic configurations has minimum ionization potential
- A$1{s^1}$
- B$1{s^2},\,2{s^2}\,2{p^6}$
- ✓$1{s^2},\,2{s^2}\,2{p^6},\,3{s^1}$
- D$1{s^2},\,2{s^2}\,2{p^2}$
It belongs to $IA$ group which has least ionization potential and it decreases down the group
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$\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - CH = C{H_2}\,\,\,\,\,} \\
{\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,\,C{H_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}}
\end{array}\xrightarrow[{(ii)\,NaB{H_4}}]{{(i)\,Hg{{(OAc)}_2};{H_2}O}}$