Question

What is the total number of electron domains in the molecule with the molecular formula AX3E2?

1) 3
2) 5
3) 2
4) 6

Answer 1

The molecule AX3E2 has a total of 5 electron domains, consisting of 3 bonding domains and 2 lone pairs of electrons.

Step-by-step explanation:

The total number of electron domains in the molecule with the molecular formula AX3E2 is found by adding the number of bonding domains (where X represents a bonded atom) to the number of non-bonding domains (where E represents a lone pair of electrons). In this case, there are 3 bonds to atoms (AX3) and 2 lone pairs of electrons (E2). Therefore, the total number of electron domains is 3 (AX3) plus 2 (E2), which adds up to 5 electron domains.