MCQ
The correct statement in respect of $d-$ block elements
- AThey are all metals
- BThey show variable valency
- CThey form coloured ions and complex salts
- ✓All above statements are correct
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${C_6}{H_5}N{H_2}\mathop {\xrightarrow{{NaN{O_2}/HCl}}}\limits_{0 - 5\,^o C} X\mathop {\xrightarrow{{HN{O_2}}}}\limits_{C{H_2}O} Y + {N_2} + HCl$
$X$ and $Y$ are respectively