Which group of the periodic table of elements forms only 2+ ions?
A) group 1A
B) group 2A
C) group 1B
D) group 7A
E) group 8A

Question

Quizplus · Accepted Answer

Group 2A, also known as the alkaline earth metals, forms only 2+ ions because they have two valence electrons that they must lose in order to achieve a stable electron configuration. They include elements such as magnesium, calcium, and barium. The other groups listed in the options can form ions with different charges, such as +1, +3, or -1.

Which Group of the Periodic Table of Elements Forms Only