1.

The acceleration of an electron in the first orbit of the hydrogen atom (z=1) is:

A.  \[\frac{{{h}^{2}}}{{{\pi }^{2}}{{m}^{2}}{{r}^{3}}}\]
B.  \[\frac{{{h}^{2}}}{8{{\pi }^{2}}{{m}^{2}}{{r}^{3}}}\]
C.  \[\frac{{{h}^{2}}}{4{{\pi }^{2}}{{m}^{2}}{{r}^{3}}}\]
D.  \[\frac{{{h}^{2}}}{4\pi {{m}^{2}}{{r}^{3}}}\]
Answer» D.  \[\frac{{{h}^{2}}}{4\pi {{m}^{2}}{{r}^{3}}}\]


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