Question

how many energy levels does sodium have? 1 2 3

Explanation:

Sodium has an atomic number of 11. Its electron configuration is \(1s^{2}2s^{2}2p^{6}3s^{1}\). The principal quantum numbers \(n = 1\), \(n=2\), and \(n = 3\) represent the energy levels. So, sodium has 3 energy levels.

Answer:

3