Hund's Rule of Multiplicity | Atomic Structure , Class-11th Chemistry | CBSE/ JEE Mains #xdc #cbse

Atomic Structure Class-11th Chemistry. Hund's Rule of Multiplicity. Hund's Rule is one of the important topic of Class-11th chemistry by the point of view of CBSE Board Exam and JEE Mains. Hund's rule of maximum multiplicity is a rule based on observation of atomic spectra, which is used to predict the ground state of an atom or molecule with one or more open electronic shells. It states that for a given electron configuration, the term with maximum multiplicity falls lowest in energy. According to this rule electron pairing in p, d and f orbitals cannot occur until each orbital of a given subshell contains one electron each or is singly occupied. I.e. every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin. The rule, discovered by Friedrich Hund in 1925, is of important use in atomic chemistry, spectroscopy, and quantum chemistry, and is often abbreviated to Hund's rule. class-11th hund's rule. class-11Th Atomic Structure. Atomic Structure important topic. Atomic Structure. #xdc #cbse #jee #cbse2024 #jee2024 #chemistry #xdayschallenge #class11 #class11chemistry #atomicstructureclass11 #hund'srule