5. Name the methods which can be used to separate the following:
mixture of water and petrol
(ii) mixture of water and sand
(iii) mixture of water and sodium chloride
(iv) mixture of ethanol and water
(v) mixture of ammonium chloride and sand​

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.