Question

1. what shape is the following: (0.5 points) *

ash₂br
○ linear
○ bent
○ trigonal pyramidal
○ trigonal planar
○ tetrahedral

1. what is the name of if7? (0.5 points) *

enter your answer

Explanation:

Step1: Calculate As's valence electrons

As has 5 valence electrons; bonds: 3 (2 H + 1 Br), lone pairs: (5-3)/2=1. Total electron domains: 4.

Step2: Determine molecular shape

Electron geometry: tetrahedral. Molecular shape (3 bonding,1 lone pair): trigonal pyramidal.

Step3: Name IF₇

Iodine is central; 7 fluorine atoms. Prefix "hepta-" for 7. Name: iodine heptafluoride.

Answer:

C. Trigonal Pyramidal
Iodine heptafluoride