Chapter_3 4th edition(1) (These are Just Lecture Notes)

Electromagnetic Radiation

Energy propagated by electric and magnetic fields, consisting of different types of radiation including visible light, ultraviolet light, radio waves, and X-rays.

Wavelength (λ)

The distance between identical points on successive waves, which determines the color of light.

Frequency (ν)

The number of waves that pass through a particular point in one second, measured in hertz (Hz) or cycles per second.

Photon

A particle of light that carries energy and whose energy is directly proportional to its frequency.

Photoelectric Effect

The emission of electrons from a metal surface when light of a certain frequency shines on it.

Quantum Mechanics

The branch of physics that describes the properties of light and matter at atomic scales, combining the wave and particle models.

De Broglie Wavelength

The wavelength associated with a moving particle, derived from the relationship λ = h / (mv), where h is Planck's constant, m is mass, and v is velocity.

Heisenberg Uncertainty Principle

A principle stating that it is impossible to know simultaneously the exact position and momentum of a particle.

Orbital

A region of space around an atom's nucleus where there is a high probability of finding an electron.

Quantum Numbers

Numbers that describe the properties of atomic orbitals and the electrons in those orbitals, including principal, angular momentum, magnetic, and spin quantum numbers.