Question

Nitrogen (N) has seven electrons. How many electrons are in the second shell of a nitrogen atom?

Answer 1

Five electrons

Step-by-step explanation:

Nitrogen has 7 electrons --- 2 in the first shell, and 5 in the second shell (so five valence electrons). Oxygen has 8 electrons --- 2 in the first shell, and 6 in the second shell (so six valence electrons).

Answer 2

5

Step-by-step explanation:

The first shell of an atom always contains 2 electrons, every other shell can contain up to 8 electrons each.