MCQ
The electronic configuration of fluorine is
- A$1{s^2},2{s^2},2{p_x}^1,2{p_y}^1,2{p_z}^1$
- B$1{s^2},2{s^2},2{p_x}^2,2{p_y}^1,2{p_z}^1$
- ✓$1{s^2},2{s^2},2{p_x}^2,2{p_y}^2,2{p_z}^1$
- D$1{s^2},2{s^2},2{p_x}^2,2{p_y}^2,2{p_z}^2$
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$2 {X}+\mathrm{B}_2 \mathrm{H}_6 \rightarrow\left\lfloor\mathrm{BH}_2(\mathbf{X})_2\right\rfloor^{+}\left\lfloor\mathrm{BH}_4\right]^{-}$ the amine(s) ${X}$ is$(are)$
$(A)$ $\mathrm{NH}_3$ $(B)$ $\mathrm{CH}_3 \mathrm{NH}_2$ $(C)$ $\left(\mathrm{CH}_3\right)_2 \mathrm{NH}$ $(D)$ $\left(\mathrm{CH}_3\right)_3 \mathrm{~N}$
$C{H_3}COOH + {H_2}O \rightleftharpoons C{H_3}CO{O^ - } + {H_3}{O^ + }$ is $1.8 \times 10^{-5}$, equilibrium constant for
$C{H_3}COOH + O{H^ - } \rightleftharpoons C{H_3}CO{O^ - } + {H_2}O$
$\frac{1}{2}{X_2} + \frac{3}{2}{Y_2} \to X{Y_3},\,\Delta H = - 30\,kJ$ , to be at equilibrium, the temperature will be ............... $\mathrm{K}$