When electrons fill a subshell in which the orbitals have equal energy, the order in which the orbitals are filled is such that
a. a minimum number of electrons has unpaired spins.
b. a minimum number of electrons has intrinsic angular momentum.
c. a maximum number of electrons has unpaired spins.
d. a maximum number of electrons first fills the next energy level.
e. the maximum number of electrons has the same set of quantum numbers.
C
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