How many electrons are in the n = 2 orbit for the Periodic Table entry for sodium.

Question

neonumbrella5115 · Answer

What do you think the answer is?

korosh23 · Answer

n stands for principal quantum number which n shows the number of the energy level we are dealing with. In this case the energy level is 2. 

In order to find the number of electrons. We use 2n^2 which in this case replace 2 with n and you get your answer.

For more information, you can use n^2 to find the number of orbitals in an energy level. 

If you have any question feel free to ask me to clarify it much more for you.