2.6 Electron Configurations and Orbital Notations

Front

What is the electron configuration for beryllium?

Back

1s² 2s²

Front

What is the electron configuration for neon?

Back

1s² 2s² 2p⁶

Front

What is Hund's rule?

Back

Electrons will fill degenerate orbitals singly before pairing up.

Front

What is the Pauli exclusion principle?

Back

No two electrons in the same atom can have the same four quantum numbers.

Front

What is the Aufbau principle?

Back

Electrons occupy the lowest energy orbitals first.

Front

What is the electron configuration for sodium?

Back

1s² 2s² 2p⁶ 3s¹

Front

What is the significance of quantum numbers?

Back

Quantum numbers describe the properties of atomic orbitals and the electrons in them.

Front

What are the four types of quantum numbers?

Back

Principal (n), Angular (l), Magnetic (m), Spin (s).

Front

What does the principal quantum number (n) indicate?

Back

The principal quantum number indicates the energy level of an electron.

Front

What does the angular momentum quantum number (l) indicate?

Back

The angular momentum quantum number indicates the shape of the orbital.