How many electron domains are about the central atom if given the following angles:
90: 6 electron domains
109.5: 4 electron domains
120: 3 electron domains
180: 2 electron domains
Correct?
yes.
Yes, that is correct. The number of electron domains around a central atom can be determined by looking at the bond angles.
- A bond angle of 90 degrees indicates that there are 6 electron domains around the central atom. This can be found in molecules that have an octahedral molecular geometry, such as SF6.
- A bond angle of 109.5 degrees indicates that there are 4 electron domains around the central atom. This can be found in molecules that have a tetrahedral molecular geometry, such as CH4.
- A bond angle of 120 degrees indicates that there are 3 electron domains around the central atom. This can be found in molecules that have a trigonal planar molecular geometry, such as BF3.
- A bond angle of 180 degrees indicates that there are 2 electron domains around the central atom. This can be found in molecules that have a linear molecular geometry, such as CO2.
By knowing these common bond angles and their associated electron domain count, you can determine the number of electron domains around a central atom when given a specific bond angle.