If a Quantum of Radiation Has an Energy of 2

question 18

Multiple Choice

If a quantum of radiation has an energy of 2.0 keV,what is its wavelength? (h = 6.63 x 10^-34 J*s,1 eV = 1.60 x 10^-19 J,c = 3.00 x 10⁸ m/s,and 1 nm = 10^-9 m)

• A)0.32 nm
• B)0.41 nm
• C)0.62 nm
• D)1.02 nm

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