Multiple choice What is the outermost electronic configuration of the most electronegative element? ns2 np3 ns2 np4 ns2 np5 ns2 np6 - Reveal answer Fill a bubble to check yourself C Correct answer Explanation It shows that this element contains 7 electrons in its outermost shell and it needs 1 electron more to complete its octet. Hence, it is the most electronegative element.