MCQ
For a $d$ -electron, the orbital angular momentum is:
- ✓$\sqrt 6(h / 2 \pi)$
- B$\sqrt 2(h / 2 \pi)$
- C$(h / 2 \pi)$
- D$2(h / 2 \pi)$
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Statement $(I)$ : The $\mathrm{NH}_2$ group in Aniline is ortho and para directing and a powerful activating group.
Statement $(II)$ : Aniline does not undergo FriedelCraft's reaction (alkylation and acylation).
In the light of the above statements, choose the most appropriate answer from the options given below :
${N_2}{O_4}(g)\, \to \,2N{O_2}(g)$
Data for the given reaction is
$\Delta H = +54\,kJ$ and $E_a = + 57.2\,kJ$
.......$kJ$