Give an expression to calculate the radius of an orbit. from Ch

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Structure of Atom

Short Answer Type

41.

Give Balmer equation.

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42.

What is Bohr's radius?

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43.
Give an expression to calculate the radius of an orbit.

Expression to calculating the radius of an orbit.
r = 0.529 Å x n².

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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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50.

What is quantisation of energy?

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