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

5

Explanation:

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

Five electrons

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).

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

it should be all of them because it asks if you included all of those in your answer

explanation: