Question

question 1
match the electronic geometry to the number of electron domains.
linear
choose
choose
trigonal planar
4 electron domains
1 electron domains
3 electron domains
2 electron domains
tetrahedral

Explanation:

Step1: Recall VSEPR theory

VSEPR theory states that electron - domains (bonding and non - bonding) around a central atom arrange themselves to minimize repulsion.

Step2: Match geometries to electron - domain numbers

• For linear geometry: When there are 2 electron - domains (either 2 bonding domains with no lone pairs or a combination of bonding and non - bonding in a way that the geometry is linear), the electron - domains are arranged in a straight line (180° apart).
• For trigonal planar geometry: With 3 electron - domains (all bonding or a combination of bonding and non - bonding that results in a planar triangular arrangement), the electron - domains are in a plane with 120° angles between them.
• For tetrahedral geometry: When there are 4 electron - domains (either all bonding like in \(CH_4\) or a combination of bonding and non - bonding), the electron - domains are arranged in a tetrahedral shape with approximately 109.5° angles between them.

Answer:

Linear: 2 electron domains
Trigonal Planar: 3 electron domains
Tetrahedral: 4 electron domains