Hund's rule predicts that
A) the most stable electronic structure of an atom has electron spins paired.
B) no two electrons will share the same orbital.
C) electrons in an orbital have equal but opposite charges.
D) electrons must have opposite spins to share an orbital.
E) when several orbitals of equal energy are available,as in a given subshell,electrons enter singly with parallel spins.
Correct Answer:
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