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What is meant by stationary orbit?...

What is meant by stationary orbit?

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Orbits in which energy of revolving electron remain fixed.
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CHHAYA PUBLICATION-STRUCTURE OF ATOM-EXERCISE (VERY SHORT TYPE QUESTION)
  1. What is wave number?

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  2. Arrange in order of increasing wavelength: UV, gamma, X, IR- rays.

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  3. What is meant by stationary orbit?

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  4. Who proposed the quantum theory of radiation?

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  5. What is the value of Plancks' constant in SI unit?

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  6. What is the value of angular momentum of an electron occupying the sec...

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  7. Mention the symbol and the mass number of an element which contains tw...

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  8. Why is the spectrum of H^(+) not obtained?

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  9. How many proton(s)& electron(s) are in H^(-) ion?

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  10. From which principal energy state, the excited electron comes down the...

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  11. How many neutrons are present in ""(20)^(40)Ca^(2+) ion?

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  12. What is the nature of hydrogen spectra?

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  13. Mention one ion that obeys Bohr's theory.

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  14. Write the relationship between wavelength and momentum of a moving mic...

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  15. Indicate the limitation of de Broglie equation.

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  16. Is the uncertainty principle applicable to stationary electron?

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  17. Energy associated with which of the following waves is not quantised? ...

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  18. What is an orbital according to quantum mechanical model?

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  19. How do you specify an electron in an atom?

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  20. What is the maximum number of electrons in the 'n' th orbit?

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