MCQ
Sodium metal on dissolution in liquid ammonia gives a deep blue solution due to the formation of:
- Asodium-ammonia complex
- Bsodamide
- Csodium ion-ammonia complex
- ✓ammoniated electrons
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$H _2 O (\ell) \rightarrow H _2 O ( g )$
at $T =100^{\circ} C$ and $1$ atmosphere pressure, the correct choice is :
| Column $I$ | Column $II$ |
| $(A) \,XX '$ | $(i)$ $T-$shape |
| $(B)\,XX'_3$ | $(ii)$ Pentagonal bipyramidal |
| $(C)\,XX '_5$ | $(iii)$ Linear |
| $(D)\,XX '_7$ | $(iv)$ Square pyramidal |
| $(v)$ Tetrahedral |
$N{O_2}$, $S{F_4}$ , $PF_6^ - $
Statement $(I)$ : The $4 \mathrm{f}$ and $5 \mathrm{f}$ - series of elements are placed separately in the Periodic table to preserve the principle of classification.
Statement $(II)$ :$S$-block elements can be found in pure form in nature. In the light of the above statements, choose the most appropriate answer from the options given below :