1 A laser emits photons with a wavelength of 534 nm A second laser emits photons with a frequency of 4 57x1014 Hz a Calculate the energy of the photons produced by each laser in Joules b The first laser 534 nm photons is used to heat 75 mL of water How many moles of these photons are required to increase the temperature of the water by 3 4 C The specific heat of water is 4 184 J g C c The second laser 4 57x1014 Hz produces electrons that travel at a speed of 8 16x105 m s What is the de Broglie wavelength of these electrons in nm The mass of an electron is 9 11x10 31 kg 2 Electron Configurations a Write the full electron configurations for i Copper ii As iii Na i At ii Pb2 iii Ag b Write the abbreviated electron configurations for 3 Consider the following orbital diagram ground state a What element does this configuration represent Assume that the atom is in the b Write the set of quantum numbers for the 16th electron filled in the diagram Your answer should be in the form n l ml ms Also assume that positive spin electrons take priority when filling in the diagram 4 Answer the following a What is the maximum number of electrons that can have n 3 b What is the maximum number of electrons that can have n 4 and ml 0 c What are all the possible quantum numbers for n 5 d Iron responds strongly when exposed to a magnetic field but zinc does not Explain why in terms of electronic structure
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