Noble Gas Electron Configurations for Ions: Na+, H-, O2-

[phys1618]

Homework Statement

state whether or not these ions have electron configurations of a noble gas: Na+, H-,O2-

Homework Equations

The Attempt at a Solution

I said yes to all three. Because Na+ and O2- has electron configuration of Neon. H- has electron configuration of Helium.
If I'm wrong, please correct me and explain to me about it. Thank you so much for yall time!

 

[Ygggdrasil]

Correct. Good job.

 

[phys1618]

thank you