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Shristy posted an Question
August 30, 2020 • 16:45 pm 30 points
  • IIT JAM
  • Chemistry (CY)

2. which one of the following statements concerning h2 is incorrect? (a) the non-degenerate lcao-mos (without spin)most be wither symmetric or anti-symmetric fo

2. Which one of the following statements concerning H2 is incorrect? (a) The non-degenerate LCAO-MOs (without spin)most be wither symmetric or anti-symmetric for inversion. (b) The lowest energy MO (without spin) of the molecule is anti-symmetric for inversion. ()The ground state has a multiplicity of two. ()The MOs transform into AOs of the helium ion as the two nuclei are fused together.

2 Answer(s) Answer Now
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  • Shristy Maurya

    so for non degenrate electrons are symmetrical filled na ??

  • Suman Kumar best-answer

    option B is Incorrect Answer .

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    Here lowest molecular orbital is sigma orbital which is symmetric

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    how option (a) and (c) are correct ?

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    option C is correct

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    H2+ has 1 unpaired eletron so (2s+1=2)

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    explain it mam how (a) and (c) are correct

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    and what about option (a) ??

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    option c you got na

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    for option a :only wave functions resulting in physically acceptable probability distributions are those which are either symmetrical or antisymmetrical with respect to any symmetry operation which changes the physical system into itself. This statement is always true for non-degenerate wave functions, 

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    mam ni smjh aaya option (a)

  • Suman Kumar

    I thought I have to mark correct Answer

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    mam explain option (a)

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    I didn't understand the line of option (a)

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    Here it is telling that jo hum atomic orbital use karte hai for lcao they must be either symmetric or antisymmetric

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    After lcao also they must be symmetry or antisymmetric i.e MO

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    s , p , d etc are symmetric or antisymmetric & sigma pi delta bond are also symmetric or antisymmetric

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