Ch 5 Vocab 5.1 -5.3 Electrons in Atoms

A mathematical expression for each energy level describing the probability of finding an electron at various locations around the nucleus.

• Atomic orbital

• Energy levels

• Quantum

• Quantum mechanical model

The modern description of the electrons in atoms from the mathematical solutions to Schrödinger’s equation.

• Atomic orbital

• Energy levels

• Quantum

• Quantum mechanical model

Like the rungs of a ladder, these are the fixed energies an electron can have .

• Atomic orbital

• Energy levels

• Quantum

• Quantum mechanical model

The amount of energy required to move an electron from one energy level to another.

• Atomic orbital

• Energy levels

• Quantum

• Quantum mechanical model

Says that electrons occupy the orbitals of the lowest energy first.

• Aufbau principle

• Electron configuration

• Hund’s rule

• Pauli exclusion principle

• Spin

Says electrons occupy orbitals of the same energy in a way that makes the number of electrons with the same spin direction as large as possible.

• Aufbau principle

• Electron configuration

• Hund’s rule

• Pauli exclusion principle

• Spin

Says an atomic orbital may describe at most two orbitals.

• Aufbau principle

• Electron configuration

• Hund’s rule

• Pauli exclusion principle

• Spin

The ways in which electrons are arranged in various orbitals around the nuclei in atoms.

• Aufbau principle

• Electron configuration

• Hund’s rule

• Pauli exclusion principle

• Spin

Denoted with a vertical arrow, this Is a quantum mechanical property of electrons and may be thought of as clockwise or counterclockwise.

• Aufbau principle

• Electron configuration

• Hund’s rule

• Pauli exclusion principle

• Spin

Represented by ν , it is the number of wave cycles to pass a given point per unit of time.

• Amplitude

• Frequency

• Hertz

• Wavelength

• Photon