Question

Write out the electron configurations of the ions below and determine which one is listed with an incorrect charge. (the numbers and charges written after the elemental symbol should be understood as superscripts)

A. I-
B.O2+
C. Al3+
D. Mg2+
E. none of the above

Answer 1

I think B. O2+

Step-by-step explanation:

Answer 2

B

it must be O2- not O2+, because it's an anion not a cation.