Question

The basic geometry and shape of $I_3^{-}$ are respectively:

• A. Trigonal bipyramidal geometry, linear shape
• B. Hexagonal geometry, T-shape
• C. Triangular planar geometry, triangular shape
• D. Tetrahedral geometry, pyramidal shape

Answer 1

Answer: (A)

$X$ for $I_3^{-}=\frac{1}{2}7+2-0+1=5$
Hybridization of $I$ in $I_3^{-}$is $s{p}^{3}d$.
Thus $I_3^{-}$has trigonal bipyramidal geometry with linear shape.