Question

Pairing of electrons in the orbitals belonging to the same subshell  does not take place until each orbital belonging to that subshell is singly occupied. This is called  ​

Answer 1

Answer:

pauli exclusion principle

Answer 2

Answer:

Hund's rule

Explanation:

Hund's rule states that :Every orbital in a subshell is singly occupied before any orbital is doubly occupied