If an atom can form more than one cation, the cation with the lowest charge ends with which set of letters?

A. - ic B. - ide C. - ate D. - ous

Answer is A

Explanation:

Now we know that an atom wants to complete its outer shell while keeping electrons in pairs of two now in A there are four electrons which which can be ejected while in B will want to accept 3 electrons to complete its shell as ejecting five will take lot of energy similar case will be for C, D and E which would want to accept 2,1,0 electrons respectively

D. - ous is the correct answer.