question 25\nthe observation that no two electrons in the same atom have the same set of four quantum…

question 25\nthe observation that no two electrons in the same atom have the same set of four quantum numbers is known as \nmendeleevs law\nthe quantum effect\nhunds rule\npauli exclusion principle\nquestion 26\nwhich rule specifies that the lowest - energy configuration is the one with the maximum possible number of unpaired electrons.\nthe quantum effect\nhunds rule\nmendeleevs law\npauli exclusion principle

question 25\nthe observation that no two electrons in the same atom have the same set of four quantum numbers is known as \nmendeleevs law\nthe quantum effect\nhunds rule\npauli exclusion principle\nquestion 26\nwhich rule specifies that the lowest - energy configuration is the one with the maximum possible number of unpaired electrons.\nthe quantum effect\nhunds rule\nmendeleevs law\npauli exclusion principle

Answer

Brief Explanations:

For Question 25: The Pauli exclusion principle states that no two electrons in the same atom can have the same set of four quantum numbers. For Question 26: Hund's rule specifies that the lowest - energy configuration is the one with the maximum possible number of unpaired electrons.

Answer:

Question 25: D. Pauli exclusion principle Question 26: B. Hund's rule