Question

use vsepr theory to predict the molecular geometry of the molecule hi. 1. trigonal - bipyramidal 2. trigonal - pyramidal 3. linear 4. octahedral 5. tetrahedral 6. trigonal - planar 7. bent or angular 8. none of these

Explanation:

Step1: Identify central atom

In HI, hydrogen (H) is the central atom. It has 1 valence - electron and iodine (I) has 7 valence - electrons.

Step2: Calculate electron - pair geometry

The hydrogen atom forms a single bond with iodine. There are 2 atoms in the molecule and no lone pairs on the hydrogen atom. According to VSEPR theory, the electron - pair geometry and molecular geometry for a molecule with 2 bonding pairs and 0 lone pairs is linear.

Answer:

1. linear