Orbital Diagrams Rules and Principles

Electron arrangement that uses arrows

• Electron configuration

• Shorthand configuration

• Lewis dot structure

• Orbital diagram

What does Hund's rule states ?

• states that single electrons electrons with the same spin must occupy each-energy orbital before additional electrons with opposite spins can occupy the same orbitals

• states that each electron occupies the lowest energy orbital available
  

• states that a maximum of two electrons can occupy a single atomic orbital, but if only if the electros have opposite spins

What does Pauli exclusion principle state ?

• states that each electron occupies the lowest energy orbital available

• states that a maximum of two electrons can occupy a single atomic orbital, but if only if the electros have opposite spins

• states that single electrons electrons with the same spin must occupy each-energy orbital before additional electrons with opposite spins can occupy the same orbitals

Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?

• Hund’s Rule

• Aufbau Principle
  

• Pauli Exclusion Principle

According to Hund's rule, what is the electron configuration for the p orbitals in a neutral nitrogen atom?

Tags

NGSS.HS-PS1-1

Which of these is WRONG?

• A

• B

• C

• D

Answer explanation

D is wrong because the final electron must have the same spin as the other electrons in its orbital. The others are up, so that electron must be up as well.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Name the three rules or principles that determine how electrons are arranged in an atom's orbitals when the atom is in the ground state.

• Pauli Exclusion Principle, Hund's Rule, Aufbau Principle

• Bohr's Model, Rutherford's Model, Quantum Model

• Newton's Laws, Kepler's Laws, Ohm's Law

• Law of Conservation of Mass, Law of Definite Proportions, Law of Multiple Proportions

What principle helps determine electron configurations for atoms in the ground state?

Tags

NGSS.HS-PS1-1

The Pauli exclusion principle is used in modeling electron arrangements in atoms by:

• allowing electrons to occupy the same quantum state within an atom.

• preventing electrons from occupying the same quantum state within an atom.

• allowing electrons to have the same set of quantum numbers.

• preventing electrons from having different sets of quantum numbers.

The role of Hund's rule in electron configuration is to:

• maximize the total spin of electrons in degenerate orbitals

• minimize the total energy of the atom

• ensure electrons fill the lowest energy orbitals first

• pair electrons in orbitals before moving to the next