Question

The representation of the ground state electronic configuration of $He$ by box - diagram as $\uparrow \uparrow$ is wrong because it violates

• A. Hysenberg’s Uncertainty Principle
• B. Bohr’s Quantization Theory of Angular Momenta
• C. Pauli Exclusion Principle
• D. Hund’s Rule

Answer 1

Answer: (C)

Pauli’s exclusion principle states, “An orbital can have a maximum of two electrons and these must have opposite spins.”