Electromagnetic SpectrumLow frequency, higher wavelengths  High frequencies, lower wavelengthsWhich of the following has the greatest energy?Radio signalX-ray*****Blue SkyElectromagnetic RadiationWave Properties of LightWavelength (λ): distance from crest to crest or trough to troughFrequency (ν): the number of times a wave passes a point per unit of timeAmplitude: the height of the crest or depth of the troughWavelength and frequency related by. . .λν=cWhere λ is wavelength (in meters), v is frequency (in hertz or s-1), and c is the speed of light in vacuumC is a constant and in a vacuum equals 2.99792458x10^8 m/sAtomic SpectraFraunhofer lines (dark spectra)Sodium Emission (bright line spectra)Atomic Emission SpectraBright line emission spectra of other elementsAtomic Spectra (dark lines)Quantized StatesQuantized states: decrease energy levels (i.e. steps)Continuum states: smooth transition between levels (i.e. ramp)Particles vs. WavesIncandescence not consistent with Maxwell equations, wave theory.Most intense emission in the infrared regionLittle or no emissions in UV.Photoelectric Effect- phenomenon of light striking a metal surface and producing an electric current (flow of electrons)Proposed the idea of a photonA tiny packet of energyE photon =hν=Δ eatomQuantum theoryRadiant energy is “quantized”Having values restricted to whole-number multiples of a specific base valueQuantum- small discrete quantity of energyPhoton= photon a quantum of electromagnetic radiationEnergy of photon:Photoelectric EffectExplained by quantum theoryPhotons of sufficient energy hν dislodge e- from metal surfaceWork functionCHEM 111 1nd Edition Lecture 7 Outline of Last Lecture I. Gravitational and electrostatic forces Outline of Current Lecture II. Electromagnetic Spectrum and RadiationIII. Atomic SpectraIV. Quantized Statesa. Particles vs. WavesV. Quantum TheoryVI. Photoelectric EffectCurrent Lecture Electromagnetic Spectrum Low frequency, higher wavelengths  High frequencies, lower wavelengthsThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute. Which of the following has the greatest energy?- Radio signal- X-ray*****- Blue SkyElectromagnetic Radiation Wave Properties of Light- Wavelength (λ): distance from crest to crest or trough to trough- Frequency (ν): the number of times a wave passes a point per unit of time- Amplitude: the height of the crest or depth of the trough- Wavelength and frequency related by. . . λν=c- Where λ is wavelength (in meters), v is frequency (in hertz or s-1), and c is the speed of light in vacuum- C is a constant and in a vacuum equals 2.99792458x10^8 m/sAtomic SpectraFraunhofer lines (dark spectra)Sodium Emission (bright line spectra)Atomic Emission Spectrao Bright line emission spectra of other elementsAtomic Spectra (dark lines)Quantized States- Quantized states: decrease energy levels (i.e. steps)- Continuum states: smooth transition between levels (i.e. ramp) Particles vs. Waves- Incandescence not consistent with Maxwell equations, wave theory.o Most intense emission in the infrared regiono Little or no emissions in UV.Photoelectric Effect- phenomenon of light striking a metal surface and producing an electric current (flow of electrons)Proposed the idea of a photon - A tiny packet of energy- E photon =hν=Δ eatomQuantum theory Radiant energy is “quantized”- Having values restricted to whole-number multiples of a specific base value Quantum- small discrete quantity of energy Photon= photon a quantum of electromagnetic radiation Energy of photon:  Photoelectric Effect Explained by quantum theory- Photons of sufficient energy hν dislodge e- from metal surface- Work