CHE 1301 Lecture Notes - Lecture 11: Atomic Orbital, Electromagnetic Radiation, Photon
Document Summary
Electromagnetic radiation - one of the ways that energy travels through space. c=v . Wavelength = distance between two peaks/troughs v - frequency = number of waves per second that pass thru a fixed point c - speed of light = 3. 00e-8 m/s (given) Amplitude = height of wave, a measure of intensity. Wavelength = higher energy, shorter wavelength, differing colors. Different wave lengths carry different amounts of energy (red has less, blue has more) Energy of photon = energy change in the emitting. Ground state - atom with the lowest possible state. When an h atom absorbs energy from an outside source it enters an excited state. Energy in the photon corresponds to the energy used by the atom to get to the excited state. Since only certain energy changes occur the h atom must contain discrete energy levels. All energy levels of all atoms are quantized (stairs not flight)
