How many 1s energy states are present in one mole of sodium vapor? Are they all filled in normal condition? How many 3s energy states are present in one mole of sodium vapor? Are they all filled in normal conditions?

Question

Philoid · Accepted Answer

One mole of sodium vapor has 6.02 × 10²³ atoms (Avogadro’s number). A sodium atom has atomic number 11. The electronic configuration of sodium is.

Therefore, there are 2× 6.02 × 10²³ = 12.04 × 10²³ (number of electrons occupying a state × Avogadro' s number) 1s energy states in one mole of sodium vapor and they are all filled in normal conditions.

Also, there are 1×6.02× 10²³ = 6.02× 10²³. 3s energy states in one mole. The 3s energy states is partially filled in normal conditions.