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Which of the following does not exist on...

Which of the following does not exist on the basis of molecule orbital theory ?

A

`H_2^(+)`

B

`He_2^(+)`

C

`He_2`

D

`Li_2`

Text Solution

Verified by Experts

The correct Answer is:
C
Helium molecule does not exist as bond order of `He_2= 0`.
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ERRORLESS-CHEMICAL BONDING AND MOLECULAR STRUCTURE-NCERT BASED QUESTIONS (Molecular Orbital Theory)
  1. When two atomic orbitals combine, they form

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  2. Which of the following does not exist on the basis of molecule orbital...

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  3. In O2^-, O2 and O2^(-2) molecular species, the total number of antibo...

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  4. Which of the following is correctly based on molecular orbital theory ...

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  5. N2 accept electron and convert into N2^-, where this electron goes

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  6. During change of NO^(+)to NO, the electron is added to

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  7. Which is false statement about LCAO

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  8. Which of the following molecular orbitals has two nodal planes ?

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  9. The number of nodal planes present in a sigma^** antibonding orbital i...

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  10. The bond order in O2^-ion is

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  11. The bond order in He2^(+) ions is :

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  12. The pair of species with the same bond order is :

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  13. The bond order of which of the following molecules/ ion(s) is 3

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  14. Bond order and magnetic moment of CO^+ is

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  15. The correct statement with regard to H2^(+) and H2^(-) is

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  16. Bond order of O2,O2^(2-),O2^-,O2^+

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  17. If bond order increase than .

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  18. The bond order of the N-O bonds in NO3^- ion is

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  19. Assuming that Hund's rule is violated the bond order and magnetic natu...

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  20. The paramagnetic behaviour of B2 is due to the presence of

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