chemistry chapter 4. rutherfords atomic model
DESCRIPTION
Wave-like Characteristics of Light All forms of electromagnetic radiation form the electromagnetic spectrum = continuous. All forms of electromagnetic radiation move at a constant speed = 3.00 X 10 8 m/s Properties include – frequency and wavelength Formula – c = ʎv c= speed of light, a constant (3.00 x 10 8 m/s) ʎ = wavelength (m) v = frequency, in units of hertz (Hz, sec -1)TRANSCRIPT
ARRANGEMENT OF ELECTRONS IN ATOMS
Chemistry – Chapter 4
Rutherford’s Atomic Model
Wave-like Characteristics of Light
All forms of electromagnetic radiation form the electromagnetic spectrum = continuous.
All forms of electromagnetic radiation move at a constant speed = 3.00 X 10 8 m/s
Properties include – frequency and wavelength
Formula – c = ʎv c= speed of light, a constant (3.00 x 10 8 m/s) ʎ = wavelength (m) v = frequency, in units of hertz (Hz, sec -1)
Electromagnetic Spectrum
Wavelength
Relationship Between Wavelength and Frequency
Visible Light
Relationship Between Frequency and Energy
E = hvE = energyv = frequencyh = 6.626 x 10 -34 Jxs(Planck’s constant)
Particle Theory of Light
Photoelectric effect – light is emitted in small specific amounts called quanta.
Photoelectric Effect
Quantum – the minimum amount of energy lost or gained by an atom.
Aka - photon
Absorption and Emission If a photon’s
frequency is below the minimum requirement, electrons in the atom cannot move.
Different metals have different minimum frequencies.
Ground state – Excited state -