Q4.1: Electron Configuration Flashcard

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.

Front

How many valence electrons does an atom with the electron configuration 1s² 2s² 2p⁶ have?

Back

8 valence electrons.

Front

What is the electron configuration of oxygen?

Back

1s² 2s² 2p⁴.

Front

What does the notation 1s² represent?

Back

It indicates that there are 2 electrons in the 1s orbital.

Front

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

Back

2 electrons.

Front

What is the significance of the Aufbau principle in electron configuration?

Back

Electrons fill the lowest energy orbitals first before moving to higher energy levels.

Front

What is the total number of electrons in an atom with the electron configuration 1s² 2s² 2p⁶?

Back

10 electrons.

Front

What are the four quantum numbers?

Back

Principal (n), Azimuthal (l), Magnetic (m_l), and Spin (m_s).

Front

What is the shape of the p orbital?

Back

Dumbbell-shaped.