Question

Which of the following pairs is not correctly matched?

• A. Hund's rule $\to$ In orbitals of equivalent energy electron spins remain unpaired if possible
• B. Pauli's exclusion principle $\to$ No two electrons can have all the four quantum numbers identical
• C. Zeeman effect $\to$ The effect of magnetic field on the atomatic spectra
• D. Uncertainty principle $\to$ It is impossible to determine the position of an electron

Answer 1

Answer: (D)

As per uncertainty principle It is impossible to determine the position and momentum of a moving electrons in an atoms with accuracy or certainty.