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Chemistry for Engineers Homework 3 1. Explain the terms wavelength and amplitude. If a photon has a frequency of 9 1010 Hz what is its wavelength? Which region of the electromagnetic spectrum does this correspond to? 2. Bohr reasoned that e- energy is quantized. Using his formula calculate the energy and the wavelength of a photon emitted by a hydrogen atom if an electron drops from the n = 6 state to the n = 3 state (h = 6.63 10-34 J, RH = 2.18 10-18 J). 3. What is the de Broglie wavelength of a 120 g football traveling at 35 m/s (h = 6.63 10-34 J)? 4. Define the Schrodinger wave equation quantum terms n, l, ml and ms. 5. Draw all the s, p and d-orbitals which may be derived from the Schrodinger wave equation. 6. Define the Aufbau principle and Hund’s Rule. Use these rules to determine the electronic configuration of Be, P, Ar and Fe. Indicate which are paramagnetic and which are diamagnetic.