[harkkam]

I've tried searching for the answer but need something more in-depth than "when an atom has an octet it has reached the most stable position, that of a noble gas"

Why does filling the 2p shell of say oxygen make it more stable than only having six valence e- in its outer shell.

I was reading somewhere it had to do with -Zeff/n^2 something like that and this equation predicts electron energies.

Thank you. if anyone can point me to a detailed explanation to satisfy my curiosity Id appreciate it. Thank you

[Rabn]

Have you ever thought about why roads that are bi-directional tend to experience less damage than roads that aren't bi-directional? This may seem to be unrelated at first, but give a good thinking to it, it's more symbolic than material.