What did Henry Moseley contribute to the modern periodic table? O A. He discovered the lanthanides and actinides.
O B. He identified all of the elements that are currently in the periodic
table.
O C. He ordered the elements based on atomic number.
O D. He ordered the elements based on atomic mass.

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.