**Chapter 7 Atomic Structure Key Terms**

electromagnetic radiation

frequency

wavelength

velocity

amplitude

node

stationary wave

visible spectrum

quantization

-radiation from hot objects

photoelectric effect

photons

line spectrum

Rydberg equation

ground state

excited state

quantum mechanic wave-particle duality

Heisenberg's uncertainty principle

Schrodinger's wave equation

wave function

atomic orbital

principal quantum number

secondary quantum number

magnetic quantum number

electron shell

subshell

nodal plane