Phosphorus has three electrons in its 3p sublevel and sulfur has four. phosphorus should have the lower ionization energy but it does not, sulfur does. what does this provide evidence for?
a. hund' rule
b. none of these
c. aufbau's principle
d. conservation of energy

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multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.

they dont have any evidence