Give an expression to calculate the radius of an orbit.
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44.
What is the region of light in which Lyman and Balmer series fall?
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45.
What are stationary states?
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46.
What is Zeeman effect?
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47.
What is Stark effect?
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48.
Calculate the radius of the fourth Bohr’s orbit of hydrogen atom.
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49.
When white light that has passed through sodium vapours in viewed through a spectroscope, the observed spectrum has dark line at 5890Å. Explain this observation.
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