Question

What is the total number of electron domains in the molecule with the molecular formula AX3?

1) 1
2) 2
3) 3
4) 4

Answer 1

The total number of electron domains in the molecule with the molecular formula AX3 is 3. Therefore, the correct option is 3.

Step-by-step explanation:

The molecular formula AX3 represents a molecule with a central atom (A) bonded to three other atoms (X) surrounding it. The total number of electron domains in this molecule is equal to the number of bonds and lone pairs around the central atom. In this case, since there are three bonds around the central atom, there are 3 electron domains in the molecule. Therefore, the correct answer is 3).