Question

The electrons from the atomic orbitals undergoing hybridisation are distributed into the hybrid orbitals following:

• A. Hund's rule
• B. Planck's hypothesis
• C. Aufbau principle
• D. Coloumb's law

Answer 1

The correct option is A Hund's rule

$\bullet$ Hund's rule states that every orbital having the same energy must have one electron each before electron pairing takes place.

$\bullet$ The electrons in the atomic orbitals participating in hybridisation are redistributed into the newly formed hybrid orbitals following Hund's rule.

$\bullet$ If an s orbital with two electrons and a p orbital with no electron hybridise, the resulting sp hybrid orbitals will have one electron each.