Which of the following elements is most likely to form an ion with a -2 charge?
A)Mg
B)Si
C)S
D)K
E)Ti

Question

Quizplus · Accepted Answer

Sulfur (S) has six valence electrons and typically gains two electrons to have a full outer shell, resulting in an ion with a -2 charge. Magnesium (Mg) has two valence electrons and typically loses two electrons to form a +2 ion. Silicon (Si), potassium (K), and titanium (Ti) do not typically form ions with a -2 charge.

Which of the Following Elements Is Most Likely to Form