An electron is moving at a speed of 2.1 × 10^6 m/s in the first Bohr orbit. Determine its de Broglie wavelength
a. 0.30 × 10^?10 m
b. 1.7 × 10^?10 m
c. 0.50 × 10^?10 m
d. 3.5 × 10^?10 m
e. 1.5 × 10^?10 m
d
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