Answer to Question #25494 in Inorganic Chemistry for Dottie Kee

Question

how many orbitals in Na

Answer 1

The atomic number of Na in the periodic table of elements is 11.The electron configuration for sodium is
1s²2s²2p⁶3s¹
So, as we see, Na has 3 orbitals: the first orbital has 2 electrons, the seconds orbital has 8 electrons, and the last orbital has 1 electron. This could be told also from the number of period where Na is. Na is in 3 period, so it has 3 orbitals.