MCQ
$1{s^2}2{s^2}2{p^6}3{s^1}$ shows configuration of
- A$A{l^{3 + }}$ in ground state
- B$Ne$ in excited state
- ✓$M{g^ + }$ in excited state
- DNone of these
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$C_2H_4(g) + H_2(g) \to C_2H_6(g)$
| Bond | Bond energy $(kJ)$ |
| $C-H$ | $413$ |
| $C-C$ | $348$ |
| $C=C$ | $610$ |
| $H-H$ | $436$ |

$C{H_3}CN\xrightarrow{{Na/{C_2}{H_5}OH}}A\xrightarrow{{HN{O_2}}}B\xrightarrow{{{\text{copper}}}}C$