CHEM 112 Final: Exam Notes
23 Feb 2017
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Document Summary
Electromagnetic radiation energy produced by an oscillating electrical and magnetic field through waves, transmitted by photons. All types of electromagnetic radiant move through a vacuum at the speed of light. Frequency (inversely proportional to wavelength)- number of complete wavelengths that pass a given point in one second (hz) Photoelectric effect- when light strikes the surface of a metal and electrons are ejected. Occurs when the frequency of incident light exceeds particular threshold value. If v < vo, then light intensity has no effect. Balmer series- a set of spectral lines characteristic to hydrogen. High excited state low excited state: emission (cid:523) e negative(cid:524) Low excited state high excited state: absorption (cid:523) e positive) Energy frequency (cid:2869) (cid:1831)=(cid:2869)(cid:2870)(cid:1865)(cid:1873)(cid:2870) (cid:1831)= (cid:1874) (cid:1874)(cid:3042)=(cid:1831) (cid:1831)(cid:3042) (cid:1870)(cid:3041)= (cid:1866)(cid:2870)(cid:1853)(cid:3042)(cid:1852) Specific energy level of orbital and it"s relative size: higher the n-value, higher the energy level larger the size of orbital. Paschen series, when nf = 3 rn = radius n = (cid:883),(cid:884),(cid:885) .
