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Ch. 12 E-mail - Chapter 12 Things to Memorize = c c= 2.9979...

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Chapter 12 Things to Memorize λ ν = c, c= 2.9979 x 10 8 m/s electromagnetic radiation: has electrical and magnetic fields that simultaneously oscillate in planes mutually perpendicular to each other and to the direction of propagation through space ∆E = n h ν, h is an integer greater than 0, h = 6.626 x 10 -34 J∙s E photon = h∙ c λ deBroglie’s equation: m = h λ ν , or λ = hm v Bohr model equation (used to find energy changes associated with excitement of electrons) E (in J) = -2.178 x 10 -18 J∙ Z2 n 2 , Z 2 = effective nuclear charge o n ranges from 1 (ground state, lowest energy) to ∞ (ionized) Heisenberg uncertainty principle: can’t precisely know both position and momentum of a particle at a given time o x∙ ∆m∙v h4π Can only know wave function for particle in a box o = ( ) φx 2L sin nπLx o = E n2h28mL2 where n = 1,2,3,4… o Conclusions: 1) There is a series of quantized energy levels (n can only have integer values, the quantum #) 2) The number of nodes increases with n
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