CHEM 210 Final exam Study Guide Questions and Answers

CHEM 210 Final exam Study Guide Questions and Answers
What is ground state electron configuration of Co?
[Ar]3d^9
[Ar]4s^1 3d^8
[Ar]4s^2 3d^7
[Ar]4s^2 4p^6 4d^1 - correct answer [Ar]4s^2 3d^7
molybdenum has an anomalous electron configuration. using the shorthand notation for electron
configurations, write the electron configuration
A) [kr]5s 4d^6
B) [kr]5s 4d^0 5p^6
C) [kr]5s^1 4d^5
D) [kr]5s^2 4d^4 - correct answer C) [kr]5s^1 4d^5
the symbol [Kr] represents
a) 4s^2 4p^6
b) 1s^2 2s^2 2p^6 3s^6 4s^2 4p^6
c) 1s^2 2s^2 2p^6 3s^6 4s^2 3d^10 4p^6
D)1s^2 2s^2 2p^6 3s^6 4s^2 3d^10 4p^6 4d^10 - correct answer c) 1s^2 2s^2 2p^6 3s^6 4s^2
3d^10 4p^6
What is the wavelength of UV light in the balmer series when m=2 and n=7?

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