Question

1.) An AB4 molecule has two lone pairs of electrons on the A atom (in addition...

1.) An AB4 molecule has two lone pairs of electrons on the A atom (in addition to the four B atoms). What is the electron-domain geometry around the A atom?

square pyramidal
seesaw
T-shaped
trigonal pyramidal
linear
octahedral
trigonal planar
square planar
tetrahedral
trigonal bipyramidal

bent

2.) For the AB4 molecule in Part B, predict the molecular geometry.

T-shaped
bent
trigonal pyramidal
trigonal planar
seesaw
tetrahedral
trigonal bipyramidal
square pyramidal
square planar
octahedral
linear
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Homework Answers

Answer #1

Q1. electron-domain geometry is : octahedral

Q2. molecular geometry is : square planar

Explanation

The AB4 molecule has two lone pairs of electrons in addition to four B atoms.

This means the molecule type is AX4E2

where A is the central atom, X is the number of atoms attached to central atom and E is the number of lone pairs of electons

According to VSEPR theory, for molecule type AX4E2 , electron domain geometry is Octahedral and molecular geometry is square planar

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