MCQ
All the $s$-block elements of the periodic table are placed in the groups …
- ✓$IA$ and $IIA$
- B$IIIA$ and $IVA$
- C$B$ sub groups
- D$VA$ to $VIIA$
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$B\xleftarrow{{Pd + CaC{O_3}}}R - C \equiv C - R\xrightarrow{{liq.N{H_3} + Na}}A$
$A$ and $B$ are geometrical Isomers. Then