Rules Governing Electron Configuration

What is the Aufbau principle?

• Electrons fill atomic orbitals randomly without following any specific order.

• Electrons fill atomic orbitals of the highest available energy levels before occupying lower levels.

• Electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels.

• The Aufbau principle states that electrons fill atomic orbitals based on their spin orientation.

State Hund's rule in relation to electron configuration.

• All orbitals within a subshell are completely filled before any are half-filled

• Electrons fill orbitals in pairs before singly filling them

• Electrons fill orbitals in a random order without following any specific rule

• Electrons fill orbitals singly before pairing up, and all orbitals within a subshell are half-filled before any are completely filled.

Explain the Pauli exclusion principle and its significance in electron configuration.

• The Pauli exclusion principle is significant in electron configuration as it dictates the arrangement of electrons in orbitals within an atom, ensuring stability and preventing electron-electron repulsion.

• The Pauli exclusion principle states that electrons in the same orbital must have opposite spins

• The Pauli exclusion principle allows electrons to occupy the same orbital with the same spin

• The Pauli exclusion principle is irrelevant in electron configuration

Draw the orbital notation for the element Oxygen (O).

• 1s^2 2s^2 2p^2

• 1s^2 2s^2 2p^4

• 1s^2 2s^3 2p^4

• 1s^2 2s^1 2p^4

Write the electron configuration notation for Nitrogen (N).

• 1s2 2s2 2p3

• 1s2 2s1 2p4

• 1s2 2s3 2p2

• 1s2 2s2 2p4

How does the Aufbau principle determine the order in which electrons fill orbitals?

• Electrons fill orbitals based on increasing energy levels from lowest to highest.

• Electrons fill orbitals based on the alphabetical order of the orbital names.

• Electrons fill orbitals based on decreasing energy levels from highest to lowest.

• Electrons fill orbitals randomly without following any specific order.

In what way does Hund's rule affect the distribution of electrons in orbitals?

• Hund's rule affects the distribution of electrons by ensuring that orbitals are filled with single electrons before pairing up.

• Hund's rule ensures that electrons are always paired up in orbitals

• Hund's rule dictates that electrons must fill the s orbital first before moving to other orbitals

• Hund's rule states that electrons must always occupy the same orbital before moving to the next one

Why is the Pauli exclusion principle important for understanding electron configuration?

• The Pauli exclusion principle is important for understanding electron configuration because it dictates the distribution of electrons in an atom's energy levels and orbitals.

• The Pauli exclusion principle determines the color of an atom

• The Pauli exclusion principle influences the shape of an atom

• The Pauli exclusion principle controls the speed of electrons in an atom

Illustrate the orbital notation for the element Carbon (C).

• 1s2 2s3 2p2

• 1s2 2s2 2p2

• 1s2 2s2 2p3

• 1s2 2s1 2p3

Provide the electron configuration notation for Fluorine (F).

• 1s2 2s2 2p3

• 1s2 2s2 2p4

• 1s2 2s2 2p6

• 1s2 2s2 2p5