Question

Which rule is getting violated in given electronic configuration of neon (Ne)?
$$\begin{array}{c}\upharpoonleft \downharpoonright \end{array}\begin{array}{c}\upharpoonleft \downharpoonright \end{array}\begin{array}{ccc}\upharpoonleft \downharpoonright & \upharpoonleft \downharpoonright & \upharpoonleft \upharpoonleft \end{array}$$

• A. Pauli's exclusion principle
• B. Aufbau principle
• C. Hund's rule
• D. Heisenberg's uncertainty principle

Answer 1

The correct option is A Pauli's exclusion principle

The distribution of electrons in an atom is known as the electronic configuration.
Pauli's exclusion principle states that no two electrons of the same atom can have the same set of all four quantum numbers.
Thus, if an orbital holds two electrons then they must have opposite spins.
Here in the p-orbital two paired electrons have the same spin. Hence, the given representation of electronic configuration is violating Pauli's exclusion principle.