MCQ
If three electrons could be accomodated in an orbital, then the element with atomic no $50$ will belong to:-
- ✓$4^{th}$ period and $p$ block
- B$5^{th}$ period and $s$ block
- C$4^{th}$ period and $d$ block
- D$5^{th}$ period and $p$ block
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

$Br_{2(l)} + Cl_{2(g)} \rightarrow 2BrCl_{(g)}$
are $30\ kJ\ mol^{-1}$ and $105\ J\ K^{-1} mol^{-1}$ respectively. The temperature at which the reaction will be in equilibrium is ............... $\mathrm{K}$
$(A)$ $B$ $(B)$ $B _2 H _6$ $(C)$ $B _2 O _3$ $(D)$ $HBF _4$