MCQ
An element having the electronic configuration $\left[ {Ar} \right]3{d^2}4{s^2}$ belongs to
- A$s - $ block elements
- B$p -$ block elements
- ✓$d -$ block elements
- D$f - $ block elements
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Compound $X$ and $Y$ are respectively.
$C{{H}_{3}}OH\xrightarrow{HI}C{{H}_{3}}I\xrightarrow{KCN}$
$C{{H}_{3}}CN\xrightarrow{\text{reduction}}X\xrightarrow{HN{{O}_{3}}}Y$
$(A)\, F^-, Na^+, Mg^{+2}$ $(B) \,Ni, Cu, Zn$
$(C)\, N^{-3}, Cs^+, H^-$ $(D)\, Li, He, Be^{+2}$