On the periodic table, beryllium sits above magnesium and to the right of lithium. Given that magnesium has two electrons in its outer shell and lithium has one, how many electrons would you predict beryllium has in its outer shell?
A) One
B) Two
C) Three
D) Four

Question

Quizplus · Accepted Answer

Beryllium is in Group 2 of the periodic table, like magnesium, which means it also has two electrons in its outer shell.

On the Periodic Table, Beryllium Sits Above Magnesium and to the Right