When there are four electron groups around the central atom, the possible geometries are:

1. Tetrahedral: This is the most common geometry when there are four electron groups. The angle between the electron groups in a tetrahedral arrangement is 109.5 degrees.

2. Trigonal Pyramidal: This geometry occurs when there are three bonding pairs and one lone pair of electrons around the central atom. The lone pair of electrons takes up more space than a bonding pair, causing the bonding pairs to be pushed together slightly. This results in a bond angle slightly less than 109.5 degrees.

3. Bent or V-shaped: This geometry occurs when there are two bonding pairs and two lone pairs of electrons around the central atom. The two lone pairs of electrons take up more space than the bonding pairs, causing the bonding pairs to be pushed together even more. This results in a bond angle significantly less than 109.5 degrees.

4. Square Planar: This is a less common geometry that occurs when there are four bonding pairs and two lone pairs of electrons around the central atom. The electron groups form a square on a plane around the central atom. This geometry is common in complexes where the central atom is a transition metal.

Question

When there are four electron groups around the central atom, the possible geometries are:

1. Tetrahedral: This is the most common geometry when there are four electron groups. The angle between the electron groups in a tetrahedral arrangement is 109.5 degrees.

2. Trigonal Pyramidal: This geometry occurs when there are three bonding pairs and one lone pair of electrons around the central atom. The lone pair of electrons takes up more space than a bonding pair, causing the bonding pairs to be pushed together slightly. This results in a bond angle slightly less than 109.5 degrees.

3. Bent or V-shaped: This geometry occurs when there are two bonding pairs and two lone pairs of electrons around the central atom. The two lone pairs of electrons take up more space than the bonding pairs, causing the bonding pairs to be pushed together even more. This results in a bond angle significantly less than 109.5 degrees.

4. Square Planar: This is a less common geometry that occurs when there are four bonding pairs and two lone pairs of electrons around the central atom. The electron groups form a square on a plane around the central atom. This geometry is common in complexes where the central atom is a transition metal.

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When there are four electron groups around the central atom, the possible geometries are:

1. Tetrahedral: This is the most common geometry when there are four electron groups. The angle between the electron groups in a tetrahedral arrangement is 109.5 degrees.

2. Trigonal Pyramidal: This geometry occurs when there are three bonding pairs and one lone pair of electrons around the central atom. The lone pair of electrons takes up more space than a bonding pair, causing the bonding pairs to be pushed together slightly. This results in a bond angle slightly less than 109.5 degrees.

3. Bent or V-shaped: This geometry occurs when there are two bonding pairs and two lone pairs of electrons around the central atom. The two lone pairs of electrons take up more space than the bonding pairs, causing the bonding pairs to be pushed together even more. This results in a bond angle significantly less than 109.5 degrees.

4. Square Planar: This is a less common geometry that occurs when there are four bonding pairs and two lone pairs of electrons around the central atom. The electron groups form a square on a plane around the central atom. This geometry is common in complexes where the central atom is a transition metal.

Which geometries are possible when there are four electron groups around the central atom?

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Which geometries are possible when there are four electron groups around the central atom?

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