Exploring Electron Configurations

What is the electron configuration for oxygen?

• 1s² 2s² 2p⁶

• 1s² 2s² 2p³

• 1s² 2s² 2p⁴

• 1s² 2s² 2p²

How many principal energy levels are there in an atom?

• 10

• 5

• 7

• 3

Describe the shape of an s sublevel.

• The shape of an s sublevel is spherical.

• The shape of an s sublevel is cubic.

• The shape of an s sublevel is conical.

• The shape of an s sublevel is planar.

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

• 8

• 2

• 6

• 4

State the Pauli exclusion principle in your own words.

• No two fermions can occupy the same quantum state at the same time.

• Fermions can share the same quantum state if they are in different energy levels.

• Only bosons are restricted by the Pauli exclusion principle.

• All particles can occupy the same quantum state simultaneously.

According to Hund's rule, how should electrons be distributed in degenerate orbitals?

• Electrons should pair up in degenerate orbitals before occupying them singly.

• Electrons should occupy degenerate orbitals singly before pairing up.

• Electrons should occupy all degenerate orbitals in pairs from the start.

• Electrons should randomly fill degenerate orbitals without any specific order.

What is the electron configuration for a sodium atom?

• 1s² 2s² 3s¹ 3p¹

• 1s² 2s² 2p⁶ 3p¹

• 1s² 2s² 2p⁶ 3s²

• 1s² 2s² 2p⁶ 3s¹

How many orbitals are present in the d sublevel?

• 7

• 3

• 5

• 9

What is the significance of the principal quantum number?

• It indicates the spin of the electron.

• It determines the shape of the electron's orbital.

• It defines the type of chemical bond an atom can form.

• The principal quantum number signifies the energy level and size of an electron's orbital.

Explain the difference between a sublevel and an orbital.

• A sublevel contains only one electron.

• An orbital is a division of a sublevel.

• A sublevel is the same as an orbital.

• A sublevel is a division of an energy level, while an orbital is a specific region within a sublevel where electrons are likely to be found.