Explain Methods of writing electronic configuration.
Answers
Hund's rule:- It states that the pairing of the electrons does not takes place in the orbitals of a particular sub shells (s,p,d) untill all the orbitals of sub shells first singly occupied. Moreover the singly occupied orbitals must contain the electrons with the opposite spins.
Electronic configuration varies from element to element
For example the electronic configuration of aluminum is 3s23p1.
ANSWER
Electronic configuration also called electronic structure, the arrangement of electrons in energy levels around an atomic nucleus. According to the older shell atomic model, electrons occupy several levels from the first shell nearest the nucleus,K, through the seventh shell, Q farthest from the nucleus. In terms of a more refined, quantum-mechanical model, the K-Q shells are subdivided into a set of Orbitals, each of which can be occupied by no more than a pair of electrons.