An electric field is created by particles that a) are moving b) have a charge. c) are radioactive. d) are electrically neutral.

To create an electric field, first of all, particles have to have electric charge. 

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.