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Why rainbow always forms opposite to th...

Why rainbow always forms opposite to the sun ?

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BEYOND PUBLICATION-STRUCTURE OF ATOM-EXERCISE
  1. Why rainbow always forms opposite to the sun ?

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  2. An emission spectrum consists of bright spectral lines on a dark back ...

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  3. The maximum number of electrons that can be accommodated in the L-shel...

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  4. If l = 1 for an atom, then the number of orbitals in its sub-shell is

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  5. The quantum number which explains about size and energy of the orbit o...

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  6. Bohr's model can explain

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  7. What is the use of quantum numbers ?What is electronic configuration ?

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  8. What is Aufbau principle ?

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  9. What information does the electronic configuration of an atom provide ...

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  10. What is an orbital ?

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  11. Which electron shell is at a higher energy level K or L ?

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  12. Who introduced magnetic quantum number ?

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  13. What is the shape of d-orbital ?

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  14. 'l' ' value of d- orbital is

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  15. 1s^2 2s^2 2p^1 is the electronic configuration of

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  16. Which of the following elements have high atomic weight ?

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  17. Who proposed the spectrum of hydrogen atom ?

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  18. How many number of orbitals are there in the sub-shell of a magnetic q...

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  19. The values of spin quantum numbers are (ms)

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  20. Name the principle , which says an orbital can hold only 2 electrons a...

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  21. What is the shape of p-orbital ?

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