Which of the following elements is most likely to form an ion with a -1 charge?
A)Mg
B)Si
C)S
D)Cl
E)Sc

Question

Quizplus · Accepted Answer

An ion with a -1 charge means that it has gained one electron. Among the given elements, chlorine (Cl) has 7 valence electrons in its outermost shell. By gaining one electron, it can achieve a stable octet with 8 electrons in its outermost shell, making it a negatively charged ion (Cl-). Therefore, chlorine is the most likely element to form an ion with a -1 charge.

Which of the Following Elements Is Most Likely to Form