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| Numerical 02 |
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| 02. Determine the radius of the first orbit of the hydrogen atom. What would be the velocity and frequency of the electron in the first orbit? Given: h = 6.62 x 10-34 Js, m = 9.1 x 10-31 kg, e = 1.6 x 10-19 C, k = 9 x 109 N m2 C-2. |
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| Suggested solution: |
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| The radius of the nth orbit of hydrogen atom is given by |
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| For first orbit, n = 1 |
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| For first orbit, n = 1 |
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| = 2.19 x 106 ms-1 |
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| = 6.6 x 1015 Hz |
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