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Monwar Exam 4

Which of the following represent valid sets of quantum numbers? For a set that is invalid, explain briefly why it is not correct. a. n = 3, l = 3, ml = 0 Not Valid
Violet light has a wavelength of about 410 nm. What is it's frequency? 7.317E14
Calculate the energy of one photon of violet light, 410 nm. What is the energy of 1.0 mol of violet photons? 2.92E5
Compare the energy of photons of violet light with those of red light. Which is more energetic? Violet
Place the following types of radiation in order of increasing energy per photon. i. radar signals ii. radiation within a microwave oven iii. gamma rays from a nuclear reaction iv. red light from a neon sign v. ultraviolet radiation from a sun la Radar Signals, Microwave radiation, Red light, Ultraviolet Radiation, and Gamma Rays.
Consider only transitions involving the n = 1 through n = 4 energy levels for the hydrogen atom. a. How many emission lines are possible, considering only the four quantum levels? 6
Photons of the lowest energy are emitted in a transition from the level with n = __________ to a level with n = 4 and 3
The emission line having the shortest wavelength corresponds to a transitions from the level with n = ________ to the level with n = _________. 4 and 1
A beam of electrons ( m = 9.11 × 10-31 kg/electron) has an average speed of 1.3 × 10 8 m.s -1 What is the wavelength of electrons having this average speed? 5.59E-12
How many orbitals occur in the n = 5 electron shell? How many subshells? What are the letter labels of the subshells? 25, 5, s,p,d,f,g
A possible excited state for the H atom has an electron in a 5d orbital. List all possible sets of quantum numbers n, l, and ml for this electron. n = 5, l = 2, ml = -2, -1, 0 , +1, +2
n = 2, l = 1, ml = 0 Valid
n = 6, l = 5, ml = -1 Valid
n = 4, l = 3, ml = -4 Not Valid
What is the maximum number of orbitals that can be identified by each of the following sets of quantum numbers? When ‘none’ is the correct answer, explain your reasoning. a. n = 4, l = 3 7
# of orbitals n = 5 25
n = 2, l = 2 None
n = 3, l = 1, ml = -1 One
Complete Set of Quantum Numbers for 5f n = 5, l = 3, ml = -3, -2, -1, 0, +1, +2, +3
Complete Set of Quantum Numbers for 4d n = 4, l = 2, ml = -2, -1, 0, 1, 2