Question

Which rule is not followed by configuration?

• A. Hund's rule
• B. Aufbau rule
• C. Pauli's rule
• D. $(n+l)$ rule

Answer 1

The correct option is C Pauli's rule

Paulis rule is not followed by configuration as one orbital has 2 electrons with parallel spins.
According to pauli's exclusion principle, any orbital can have a maximum of two electrons with opposite or anti parallel spin.