State the number of electrons lost or gained when the following elements form

Question

Ions:
Group 5A (15)
Express your answer as an integer

Answer 1

Group 5A elements have a valence electron configuration of 5s²5p³. To achieve a stable electron configuration, they tend to gain 3 electrons to fill their outermost shell. Therefore, the number of electrons gained when Group 5A elements form ions is 3.