EVERYDAY SCIENCE

Detailed explanation-1: -The Aufbau principle states that electrons fill lower-energy atomic orbitals before filling higher-energy ones (Aufbau is German for “building-up"). By following this rule, we can predict the electron configurations for atoms or ions.

Detailed explanation-2: -The Aufbau principle dictates the manner in which electrons are filled in the atomic orbitals of an atom in its ground state. It states that electrons are filled into atomic orbitals in the increasing order of orbital energy level.

Detailed explanation-3: -Hund’s Rule. Hund’s rule: every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.

Detailed explanation-4: -The answer to this question involves Hund’s rule. Hund’s rule states that: Every orbital in a sublevel is singly occupied before any orbital is doubly occupied. All of the electrons in singly occupied orbitals have the same spin (to maximize total spin).

Detailed explanation-5: -In simple terms, the Aufbau principle means fill the orbitals from bottom to top. In simple terms, Hund’s rule requires single occupancy before pairing. Pauli Exclusion Principle. No two electrons in a atom can have an identical set of four quantum numbers.