If the momentum of an electron is 1.95 × 10-27 kg ∙ m/s, what is its de Broglie wavelength? (h = 6.626 × 10-34 J ∙ s)
A) 340 nm
B) 210 nm
C) 170 nm
D) 420 nm
E) 520 nm
Correct Answer:
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