Question

Paragraph:
The trend of metallic properties is not that obvious in group 17. Fluorine is the most electronegative element and has no basic properties. Iodine and Bromine dissolve in oleum and other strong oxidising solvents forming species like $[I_2{]}^{+}$ and $[B{r}_2{]}^{+}$. Many other species like $[I_3{]}^{+}$ and $[B{r}_3{]}^{+}$ have also been prepared.

The shapes of $[I_3{]}^{+}$ and $[I_3{]}^{-}$ respectively are:

• A. Linear, bent
• B. Bent, bent
• C. Linear, linear
• D. Bent, linear

Answer 1

The correct option is D Bent, linear

$[I_3{]}^{+}$ has $s{p}^3$ hybridisation and has bent structure.

$[I_3{]}^{-}$ has $s{p}^{3}d$ hybridisation and has linear structure.