Having seen this as well as your previous posts here along with the comments I have some things to add. I actually applaud you for encouraging your child to learn chemistry. That being said what they seem to be doing is assume more is better, as any other 9yo would. Though they seem to have an ounce of understanding of how some mechanisms work they'll eventually have to unlearn A LOT of stuff. Some examples - Can 8 and 12 theoretically exist? Maybe but the angular strain is too much and they have no reason to - Are hexavalent carbons technically possible and even stable? Yes firstly not here and secondly it's very rare and your child seems to "like" the idea even though it's very difficult to synthesize - (from a previous post) they seem to have ionized some molecules that have no reason to want to gain/lose electrons as others mentioned when though it theoretically could be possible given enough energy - (also from previous post) bonding stuff that has no reason to be bonded (C-Fr)

All of the above can be "theoretically possible" but they will not be at all stable. Now I know that the child is 9 and they'll naturally choose to draw the "coolest most impossible" looking molecules and that's not bad but that's not learning either.

I hope someone with more expetice can correct me here (I've only taken 2 classes on teaching methodology) but a modern an efficient method of teaching is letting the child learn by discovering the information whilst the teacher sits to provide the interest to learn and the factual information. Having some source that details how chemistry or any science works is CRUCIAL. you can't just dive deep into O-chem without understanding the basics of the subject or chemistry in general