Question

What is the electron configuration for F?

Answer 1

Well, for `"fluorine"`, `Z=9...`

Explanation:

And so for a fluorine atom....

`1s^(2)2s^(2)2p^5`...the fact that fluorine ALMOST has a full valence shell, i.e. equivalent to that of neon, `1s^(2)2s^(2)2p^6`, makes fluorine the most reactive element on the Periodic Table...