List the safety measures she should take to stay safe while she carries out her experiment​

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.

Adozen is 1221/12 = 1.751.75 x 12 = 21therefore, 1.75 is the answer.