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Blake Lecture 10-13-08 - 2 ANSWER 4 3 5 4 1s 2 2s 2 2p 6 3s...

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Blake 10-13-08 Chemistry Heisenberg Uncertainty Principle There is a limit to how well we can know anything When we interact with a system, we change it H = ( p)( x) DeBroglie Wavelength All matter has a wavelength λ = h/(mv) λ = c/v (Energy) mv = p (momentum) What is the wavelength of a 36 g ball that is thrown at 80 m/s? 1. λ = (6.626 x 10 -34 kg * m 2 /s 2 ) / (0.038 kg * 80 m/s) 2. NEED WEIGHT IN KG’S 3. λ Ex 2: How many unpaired electrons does a Si (14 electrons)atom have? 1. 0 2. 1 3.
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Unformatted text preview: 2 - ANSWER 4. 3 5. 4 1s 2 2s 2 2p 6 3s 2 3p 2 Ex 3: What is the predicted ending electronic configuration for iron (26 electrons)? 1. 4d 6 2. 4d 8 3. 3d 6- ANSWER 4. 3d 9 5. 4s 2 Electronic Configuration Exceptions • Cr, Mo Cr -[Ar]4s 2 3d 4 • Mo – [Kr] 5s 2 4d 4 • W – [Xe]6s 2 4f 14 5d 4 • [Ar]4s 1 3d 10 • [Kr]5s 1 4d 10 Transition metal ions • Change the ordering of orbitals • Consider Ti(l). • [Ar]4s 2 3d 2 = [Ar] 3d 2 4s...
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