[atomicpedals]

I need to check my understanding on electron domains, make sure I'm not getting the correct answer for the wrong reasons.

So, if I'm reading correctly, the number of electron domains surrounding an atom in a molecule is equal to the number of bonded electrons plus the number of unbonded lone pairs?

For examples: IF5 has 6 electron domains, one for each of the five bonded to a F and one for the lone pair; or [TeF3]- has 5, one for each bonded to a F and then two lone pairs?

[Hunter2]

I dont know the word domain in this case. The number of electrons you described are correct. For IF₅:  Iodine has 7 electrons, 5 are bonded to each flourine and 2 are sitting in 1 lone pair.  For TeF₃^- tellurium has 6 electrons plus one electron because of negative charge . 3 Are bonded to flourine. 4 are sitting in 2 lone pairs.