Which of the following shows 13,400 as having 4 significant figures? A - 134.0

B - 1.340 x 10^4

C - 1340

D - 1.340

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.