what is hund's rule
Answers
Answer:
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.
Explanation:
Hund's Rule states that if 2 or more degenerate (i.e. same energy) orbitals are available, one electron goes into each until all of them are half full before pairing up . ... The Pauli Exclusion Principle states that no two electrons can be identified by the same set of quantum numbers.
Answer:
According to Hund’s rule:
Before the double occupation of any orbital, every orbital in the sub level is singly occupied.
For the maximization of total spin, all electrons in a single occupancy orbital have the same spin.
An electron will not pair with another electron in a half-filled orbital as it has the ability to fill all its orbitals with similar energy. Many unpaired electrons are present in atoms which are at the ground state. If two electrons come in contact they would show the same behaviour as two magnets do. The electrons first try to get as far away from each other as possible before they have to pair up.
Explanation:
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