CHAPTER 3: ELECTRONIC STRUCTURE AND PERIODIC PROPERTIES lecture 7

These flashcards cover the key concepts from Chapter 3 of the lecture notes on electronic structure and periodic properties, focusing on electromagnetic energy, quantum theory, and the dual nature of light.

Electromagnetic Energy

Energy that travels through space as waves; includes visible light.

Wavelength (λ)

The distance between two consecutive crests of a wave.

Frequency (ν)

The number of waves that pass a given point per second, measured in Hertz (Hz).

Inverse Relationship

A relationship where an increase in one quantity results in a decrease in another quantity, as seen between frequency and wavelength.

Quantum Theory

A theory that describes the energy of particles as quantized, occurring in fixed packets rather than as a continuous spectrum.

Photon

A quantized packet of electromagnetic radiation, with energy directly proportional to its frequency.

Planck’s Constant (h)

A fundamental constant (6.626×10^-34 J·s) that relates the energy of a photon to its frequency.

Wave-Particle Duality

The concept that light exhibits both wave-like and particle-like properties.

Blackbody Radiation

Electromagnetic radiation emitted by a solid object when it is heated.

Photoelectric Effect

The emission of electrons from a material when it is exposed to light of sufficient frequency.

Atomic Emission

Emission of electromagnetic radiation by an atom when it is excited by energy.

Energy State (ΔE)

The difference in energy between two quantized states of a photon during emission or absorption.