Explanation:
b I dont really know okau
I know what you're asking but I don't think the question is stated properly. Technically, an atom will not join with an "oxide" ion; i.e., the oxide ion is an atom of oxygen to which two electrons have been added. An oxide ion will add to 2 K ions or 1 Ca ion. The K ion has lost just one electron so it takes two of them to equal the 2- charge on the oxide ion whereas the Ca ion has lost two electrons and it takes only one of them to equal the charge on the oxide ion.
Atomic radius is the distance from the atom's nucleus to the outer edge of the electron cloud.
It’s A .. I think I hope this helps !
The green one cause its staying in the same position even when time is passing. - hope this helped have a great day
