MCQ
The bond order of $He_2^ + $ molecule ion is
- A$1$
- B$2$
- ✓$0.5$
- D$0.25$
$B.O. $ $= \frac{{2 - 1}}{2} = \frac{1}{2} = 0.5$.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

$C{H_3} - C \equiv CH\xrightarrow[{Dry\,ether}]{{C{H_3}MgBr}}C{H_4} + (A)\xrightarrow[{(ii)\,{H_2}O/{H^ + }}]{{(ii)\,C{O_2}}}(B),(B)$ will be
Assertion $A$ : The stability order of +$1$ oxidation state of $\mathrm{Ga}$, In and $\mathrm{Tl}$ is $\mathrm{Ga}<\mathrm{In}<\mathrm{Tl}$.
Reason $R$ : The inert pair effect stabilizes the lower oxidation state down the group.
In the light of the above statements, choose the correct answer from the options given below :