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Energy of a photon is 6 eV/atom. The wavelength of the photon is equal to
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a
20.66 nm
b
41.33 nm
c
206.6 nm
d
413.3 nm
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Correct option is C
E=hCλ; E=6 ev/atom; 6×1.602×10-19J=6.625×10-34J×3×108m/sλ; λ=2.066×10-7m=206.6 nm; or λ(nm)=1240E(ev/atom)=12406=206.6 nm ;
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