ABC26PH0333 · Atomic Structure

Subject: Physical Chemistry · Chapter: Atomic Structure · Topic: Atomic Structure – General · Exam: GATE 2005-2021 · Marks: 2 · Difficulty: Medium

The de Broglie wavelength of an argon atom ( mass $=40 \mathrm{amu}$ ) traveling at a speed of $250 \mathrm{m} \mathrm{s}^{-1}$ (rounded off to one decmial place) is ____ picometers.
\[ \left[\mathrm{N}=6.022 \times 10^{23} ; \mathrm{h}=6.626 \times 10^{-34} \mathrm{kg} \mathrm{m}^{2} \mathrm{s}^{-1}\right] \]
Answer
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Explanation
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