Question

Which of the following rule explains the ground state of outermost electronic configuration of silicon:

and not

• A. Hund's rule of maximum multiplicity
• B. Pauli's exclusion principle
• C. Aufbau principle
• D. Schrodinger wave equation

Answer 1

The correct option is A Hund's rule of maximum multiplicity

Ground state electronic configuration of $Si$

is in accordance with Hund's rule which states that electron pairing in any orbital $(s,p,d\text{or}f)$ cannot take place until each orbital of the same sub-level contains 1 electron each of like spin.