Is an electron stationary in the stationary state?
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52. 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?
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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.
59.Is Heisenberg’s uncertainty principle applicable to stationary electron? Give reason.
Heisenberg's state that it is impossible to determine simultaneously, the exact position and exact momentum (or velocity) of an electron. Thus, uncertainty principle is not applicable to stationary electron. Because, when the electron is stationary, its velocity is zero. So we can find out the position of a stationary electron with accuracy.
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60.
What is the meaning of orbital in terms of probability distribution of electrons?
Short Answer Type
What is the energy of an electron in the hydrogen atom in the ninth state?
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