Question

When an anion like F" gains an electron what element is its outer valence electron configuration

like?

Answer 1

Ne, Neon

Step-by-step explanation:

The Flourine Anion (F-) has one more electron (more negative) than nuetral Flourine.

The electrion configuration of neutral floruine is 1s2 2s2 2p5

If we add one more electron, to get anion fluorine (F-)

We get:

1s2 2s2 2p6 (giving us 10 electrons)

Which also matches the electron configuration of Neon, Ne