Presence of three unpaired electrons in p-orbital of phosphorus can be explained by

Question

Presence of three unpaired electrons in p-orbital of phosphorus can be explained by (A) Aufbau rule (B) Hund's rule (C) Faults rule (D)  (n+l) rule

Tardigrade Admin · Accepted Answer

According to Hund's rule, electron pairing will not take place in orbitals of same energy(same sub-shell) until each orbital is first singly filled with parallel spin. P(15)=1s2,2s22p6,3s23p3

Q. Presence of three unpaired electrons in p-orbital of phosphorus can be explained by

Aufbau rule

Hund's rule

Faults rule

$(n + l)$ rule

According to Hund's rule, electron pairing will not take place in orbitals of same energy(same sub-shell) until each orbital is first singly filled with parallel spin.
$P (15) = 1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{3}$