Unit 3 - Periodic Trends and Spectroscopy - Edubirdie

University:
Winston-Salem Forsyth County Schools
Course:
AP Chemistry
Academic year:

2014
Views:

80

Pages:

1
Author:

defmunkee6oxf

Unit 3 - Periodic Trends and Spectroscopy Test Review Answers Practice Problems 1. Arrange the following in order of decreasing ionization energy: Sn, S, Ar, Tl, Ra, As, Ba Answer: Ar, S, As, Sn, Tl, Ba, Ra 2. Arrange the following in order of increasing electronegativity: O, Ca, Rb, S, Ge, F, Cs Answer: Cs, Rb, Ca, Ge, S, O, F 3. Arrange the following in order of decreasing size: Ar, Cs, As, Sr, P, Ba, Ga, Sc Answer: Cs, Ba, Sr, Sc, Ga, As, P, Ar 4. Arrange the following in order of increasing size: Se2-, Sr2+, Zr4+, Kr, Rb+, BrAnswer: Zr4+, Sr2+, Rb+, Kr, Br-, Se25. Arrange the following in order of increasing effective nuclear charge: Mg, Te, Li, P, Al, At, Be Answer: Li, Be, Mg, Al, P, Te, At 6. A microwave oven might use an emission at 1.258x1010 Hz to cook your food. Calculate the wavelength and energy of a photon of this light. λ=0.02385m E=8.336x10-24J 7. One of the brightest lines in a copper bright line emission spectrum is 324.8 nm. Calculate the frequency and energy of a photon of this light. What part of the spectrum does this fall in? ν=9.236x1014Hz E=6.120x10-19J Ultraviolet 8. Bluetooth devices operate in the 2.4GHz range. What is the wavelength and energy of a photon of this light? What part of the spectrum does this fall in? λ=0.13m E=1.6x10-24J Microwaves

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