Explain anamolous behaviour of copper with respect to electronic configuration .State hunds rule of maximum multiplicity.
Answers
Answer:
Explanation:
Using the Aufbau principle, you would write the following electron configurations
Cu- {ar} 3d9 4s2
Actual configuration
Cu-{ar} 3d10 4s2
To understand why this occurs, it is important to realize that...
1. Completely filled sublevels are more stable than partially filled sublevels.
2. A sublevel which is exactly half filled is more stable than a partially filled sublevel which is not half full.
3. Electrons are lazy and will do whatever places them in the lowest energy state = which is the most stable state
HUNDS RULE OF MAXIMUM MULTIPLICITY
rule states that for a given electron configuration, the lowest energy term is the one with the greatest value of spin multiplicity. This implies that if two or more orbitals of equal energy are available, electrons will occupy them singly before filling them in pairs.