Practice Exam 3

Practice Exam 3 - 10.

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10. Anexcitedelectroninoxygenatom"A"makesatransitionfromn=3ton=Zandemitsa photonA- Anelectroninoxygenatom"B"makesatransitionfromn=4ton=2 and emits a photon B. (a) Which has greater energy, photon A or B? (b) Which has greater wavelength, photon A or B? (c) Which has greater frequency, photon A or B? Green light has a wavelength of 550 nm. What is the energy of a photon of this green light? In the spectrum of atomic hydrogen, what is the wavelength of light associated with the 2ton= l transition? Name the elements that have the electron configurations: (a) [Ar] 4s23d2 (b) lsz 2szzp4 11. 12. ( 13' t
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r1 N 6 14. Consider a valence electron of a neutral calcium (Ca) atom. (a) What is the principle quantum number n? O) Is this electron in an s, p, d, or f orbital? (c) Is this electron paired or unpaired? List these 5 atoms, Mg, Al, Si, Ca, and Sr, in order of increasing atomic radius: Smallest -+ Largest (8 points) Consider the quantum mechanical description of the 2p* orbital. Mark each of the following statements
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Practice Exam 3 - 10.

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