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Structure of Atom

Short Answer Type

51.

Is an electron stationary in the stationary state?

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52.

straight E subscript straight n space equals space fraction numerator negative 1312 over denominator straight n squared end fraction space equals space kJ space mol to the power of negative 1 end exponent.

What is the energy of an electron in the hydrogen atom in the ninth state?

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53.

What is the nature of electron, according to de-Broglie?

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54.

Give a mathematical relation between wavelength and momentum of a particle.

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55.

What is the most important application of de-Broglie concept?

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56.
Name the experiment used to verify the wave nature of electrons?

Davisson and Germer’s experiment or Thompson’s experiment.

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57.

The wavelength of a proton, an electron and an α-particle moving with the same velocity are in the order: electron > proton > α-particle. How do you justify it?

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58.

Write the mathematical form of Heisenberg's uncertainty principle.

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59. Is Heisenberg’s uncertainty principle applicable to stationary electron? Give reason.

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60.

What is the meaning of orbital in terms of probability distribution of electrons?

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Short Answer Type

56. Name the experiment used to verify the wave nature of electrons?

56.
Name the experiment used to verify the wave nature of electrons?