Why are sodium (Na) and potassium (K) in the same group on the periodic table? 1) They have similar atomic weight
2)They have similar reactivity
3)They are both hard and brittle
4)They are both colorless

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.

The formula is (nh4)2co3