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ashna

  • 2 years ago

can anyone explain me quantum numbers ?

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  1. ashna
    • 2 years ago
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    @akash123

  2. sgurjant
    • 2 years ago
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    n = the shell l (total nodes) = subshell which is 0...n-1 in which so s = 0 p = 2 d= 3... radial nodes are n-l-1

  3. ashna
    • 2 years ago
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    i want all the 4 quantum numbers explained with one of their main characteristic please !

  4. sgurjant
    • 2 years ago
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    what do u mean? im studying this right now too... ill give an example? lets say u have k which is potassium...1s2 2s2 2p6 3s2 3p6 4s1 the prinicple quantum number would be 4 because its form the 4th shell. the subshell would be n-1 radial nodes is n-L-1

  5. sgurjant
    • 2 years ago
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    http://www.youtube.com/watch?v=VAnZtvYG51c check this out it definitely helps

  6. ashna
    • 2 years ago
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    i know this one , what am asking is for the simple defenition of all 4 quantum nos , the principal , azimuthal , spin and magnetic quantum no's and their characteristic , i have a theory test that's y :|

  7. ashna
    • 2 years ago
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    @sgurjant ty :)

  8. akash123
    • 2 years ago
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    so for telling the orientation of a particular orbit...we need a 3rd quantum no...that is magnetic quantum no eg px, py, pz l=1 for p so m = -l to +l m=-1,0,+1 this corresponds to px, py and pz

  9. akash123
    • 2 years ago
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    fine?

  10. ashna
    • 2 years ago
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    yes right !

  11. akash123
    • 2 years ago
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    similarly l=2 for d sub-shell, so m=-2 to +2 m=-2,-1,0,+1,+2 so d orbital has 5 orientation

  12. akash123
    • 2 years ago
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    now the last one---spin quantum no u know that each of px, py and pz contain 2 electrons

  13. ashna
    • 2 years ago
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    okay dxy dyz dzx dz^2 and dx^2-y^2 right ?

  14. ashna
    • 2 years ago
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    yes

  15. akash123
    • 2 years ago
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    so for distinguishing between the two electrons in an orbital (px, py or pz) , we need a fourth quantum number.

  16. ashna
    • 2 years ago
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    okay

  17. akash123
    • 2 years ago
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    u can understand it by assume that electron is spinning clockwise or anticlockwise. so s= either+1/2 or -1/2

  18. ashna
    • 2 years ago
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    okay , how do i use it , like how do they ask question regarding spin quantum no ?

  19. akash123
    • 2 years ago
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    u will be asked...write all the quantum nos of an electron in any atom..

  20. ashna
    • 2 years ago
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    can yu give a qn and its answer ?

  21. akash123
    • 2 years ago
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    |dw:1350458194009:dw|

  22. akash123
    • 2 years ago
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    look for ur text book.

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