Answer:
Hydroxyl
Explanation:
A hydroxyl group is a functional group that attaches to some molecules containing an oxygen and hydrogen atom, bonded together. Also spelled hydroxy, this functional group provides important functions to both alcohols and carboxylic acids.
I think it’s B. I’m not 100% sure but I believe it is B! Srry if this is late btw.
“Metal ions are typically smaller than their corresponding neutral atoms”
Answer) Smaller