Hund's Rule, the Pauli Exclusion Principle & the Aufbau Principle

Match the following rules with their statements : Rules Statements (i) Hund's Rule (a) No two electrons in an atom can have the same set of four quantum numbers. (ii) Aufbau Principle - Chemistry | Shaalaa.com

Use Hund's rules to find the spectroscopic description of the g... | Filo

SOLVED:(a) Show that the following formulae summarize the Hund's rules for a shell of angular momentum l containing n electrons: S=1 / 2[(2 l 1)-|2 l 1-n|] L=S[2 l 1-n] J=|2 l-n| S (b) For a given L S -multiplet, verify that (2 L 1)(2 S 1)=∑|L-S|^|L S|(2 J 1) (c) Find the ground state of (i) Eu^2 in the configuration 4 f^7 5  s^2 p^6 (ii) Dy^3 in the configuration 4 f^9 5  s^2 p^6 (iii) Tm^3 in the configuration 4 f^12 5  s^2 p^6

Hund's Rule — Overview & Application - Expii