Question

which of the following statements is not true regarding non - bonding electron domains? select one: they take up more space than bonding domains and result in smaller than expected bond angles. they are also called \lone pairs\. they contribute to both the electron geometry and the molecular geometry of a molecule. they take up less space than bonding domains and result in larger than expected bond angles.

Explanation:

• Analyze each option:
• Option 1: Non - bonding electron domains (lone pairs) occupy more space than bonding domains, causing bond angles to be smaller than expected. So this statement is true.
• Option 2: Non - bonding electron domains are indeed also called “lone pairs”. This statement is true.
• Option 3: Non - bonding electron domains (lone pairs) contribute to electron geometry (as electron domains) and affect molecular geometry (by repelling bonding domains). This statement is true.
• Option 4: Non - bonding electron domains take up more space than bonding domains, which leads to smaller (not larger) than expected bond angles. So this statement is not true.

Answer:

The option "They take up less space than bonding domains and result in larger than expected bond angles." (the fourth option in the list)