Use the reaction 12(s) this question.
12(9), AH = 62.4 kJ/mol, AS = 0.145 kJ/(mol-K), for
What can be said about the reaction at 500 K?
A. It is exothermic.
B. It is spontaneous.
C. It proceeds rapidly.
D. Its entropy decreases.

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.

It was ernest rutherford

Well technically there are two correct answers b and d. but for you its probably b in general.good day sir/ma'am : ) (i know not gender)