Which rule explains the electronic configuration of chromium is [Ar] $3 d^{5} 4 s^{1}$ instead of [Ar] $3 d^{4} 4 s^{2}$ ?
Pauli's exclusion principle
Aufbau Principle
Hund's rule
Heisenberg principle

Question

Which rule explains the electronic configuration of chromium is -Ar- 3d-5- 4s-1- instead of -Ar-3d-4-4s-2-Pauli-s exclusion principleAufbau PrincipleHund-s ruleHeisenberg principle

Toppr Admin · Accepted Answer

According to Hund-apos-s rule- first we fill single electron in every orbit of a subshell then we go for next -here all the D orbit get filled by single electron that show it follow the Hund-apos-s rule-

Which rule explains the electronic configuration of chromium is [Ar] 3d54s1 instead of [Ar]3d44s2?Pauli's exclusion principleAufbau PrincipleHund's ruleHeisenberg principle

According to Hund's rule, first we fill single electron in every orbit of a subshell then we go for next ,here all the D orbit get filled by single electron that show it follow the Hund's rule.

Which rule explains the electronic configuration of chromium is [Ar] $3 d^{5} 4 s^{1}$ instead of [Ar] $3 d^{4} 4 s^{2}$ ?
Pauli's exclusion principle
Aufbau Principle
Hund's rule
Heisenberg principle