Which of the following is the correct lewis electron dot diagram for the sodium atom

It would be B. Na has only one valence electron for it is a group 1A element.

There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. thus, the answer is b. do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.