Multiple Choice
If a quantum of radiation has an energy of 2.10 keV,what is its wavelength? (h = 6.63 × 10−34 J⋅s,1 eV = 1.60 × 10−19 J,c = 3.00 × 108 m/s,and 1 nm = 10−9 m)
A) 0.95 nm
B) 197 nm
C) 0.59 nm
D) 1.24 nm
E) 0.14 nm
Correct Answer:

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Correct Answer:
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