KC- Electron Configuration #2

Front

What is electron configuration?

Back

The distribution of electrons in an atom's orbitals, indicating the energy levels and sublevels occupied by electrons.

Front

What is the Pauli Exclusion Principle?

Back

No two electrons in an atom can have the same set of four quantum numbers; thus, an orbital can hold a maximum of two electrons with opposite spins.

Front

What is Hund's Rule?

Back

Electrons will fill degenerate orbitals (orbitals of the same energy) singly before pairing up, ensuring maximum unpaired electrons.

Front

What is the significance of the s-block in the periodic table?

Back

The s-block consists of groups 1 and 2, where the last electron enters an s orbital.

Front

What is the order of filling orbitals according to the Aufbau principle?

Back

Electrons fill orbitals starting from the lowest energy level to the highest, following the order: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, etc.

Front

What is the electron configuration for Neon (Ne)?

Back

1s² 2s² 2p⁶.

Front

What is the electron configuration for Iron (Fe)?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶.

Front

What is the difference between core electrons and valence electrons?

Back

Core electrons are those in the inner shells, while valence electrons are in the outermost shell and are involved in chemical bonding.

Front

What is the maximum number of electrons that can occupy an orbital?

Back

Two electrons, which must have opposite spins.

Front

What is the shape of s, p, and d orbitals?

Back

s orbitals are spherical, p orbitals are dumbbell-shaped, and d orbitals have more complex shapes.