A) 1 Å
B) 0.66 Å
C) 6.6 Å
D) 66 Å
Correct Answer: B
Solution :
\[\lambda =\frac{h}{m{{v}_{rms}}}\]Þ\[\lambda =\frac{6.6\times {{10}^{-34}}}{2\times 1.67\times {{10}^{-27}}\times 3\times {{10}^{3}}}=0.66\,{\AA}\]
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