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Explain what is meant by quantisation of...

Explain what is meant by quantisation of energy.

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ICSE-STRUCTURE OF ATOM-Short Answer Type Questions
  1. Define isotopes and isobars.

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  2. Define wave number. How is it related to frequency and wavelength?

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  3. Which of the following are not electromagnetic waves? (i) alpha-rays...

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  4. What is photoelectric effect? Mention the Einstein's photoelectric equ...

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  5. Why light is sald to possess a dual nature?

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  6. What do you understand by the term spectrum ?

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  7. Mention the main points of difference between the emission and absorpt...

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  8. How many series are found in the spectrum of atomic hydrogen? Mention ...

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  9. State one major drawback of Rutherford's model.

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  10. Explain what is meant by quantisation of energy.

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  11. Electronic energy is negative because:

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  12. State the expression for Heisenberg.s uncertainty principle.

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  13. What do you understand by an orbital? How is it different from an orbi...

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  14. How many and which quantum numbers are required to completely define :...

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  15. Draw the shapes of 1s, 2s, 2px, 2py, and 2pz, orbitals.

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  16. Give a brief account of Hund's rule of maximum multiplicity.

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  17. What is Aufbau principle? How is it helpful in the filling up of elect...

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  18. Name a process which can remove both temporary and permanent hardness ...

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  19. Why is 4s shell filled before 3d shell? Explain in the light of n+I ru...

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  20. Write the electronic configurations of following elements Li, N, Ne,...

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