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What is likely to be the principal quantum number for a circular orbit of diameter 20nm of the H atom if we assume Bhor orbit to be the same as that represented by the principal quantam number?
radius of bohr's orbit is 10 nm
also, radius of bohr's orbit is given by 0.0529 ×n²/z nm as z=1 , therefore r= 0.0529n² nm
equating the above two ,we have
10 = 0.0529 n²
on solving this u get principal quantumm no = 13
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