I believe the answer to your question is none of the above
Answer:
Cryogenic Liquids
Explanation:
Liquid oxygen and liquid nitrogen are prepared via the cryogenic distillation of air.
Answer:
Ionic compounds don't conduct electricity very well because the charge carriers can't move through the crystal. They can conduct heat because the kinetic energy itself is the "heat carrier”.
Hope this helps :)
I would go with radioactivity is controlled radiation from a nucleus
A valence electron structure would be like this 1s^2 2s^2 2p^6 etc
1s^2 would be 2, 2s^2 would be 4, 2p^6 would be 12 and so on and so forth.
