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In the of the following pairs of molecul...

In the of the following pairs of molecules /ions both the species are not likely to exist?

A

`H_(2)^(-),He_(2)^(2+)`

B

`H_(2)^(+),He_(2)^(2-)`

C

`H_(2)^(-),He_(2)^(2-)`

D

`H_(2)^(2+),He_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Species with BO=zero does not exist.
`H_(2)^(2+):[sigma_(1s)]^(0),B.O=0`
`He_(2):[sigma_(1s)]^(2)[sigma_(1s)^(**)]^(2),B.O=0`
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DINESH PUBLICATION-CHEMICAL BONDING AND MOLECULAR STRUCTURE -JEE (MAIN) & OTHER ENGINEERING ENTRANCE EXAMINATIONS
  1. N(2) and O(2) are converted into monocations, N(2)^(+) and O(2)^(+) r...

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  2. A neutral molecule XF(3) has a zero diple moment. The element X is mos...

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  3. The molecule having smallest bond angle is

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  4. Stability of the species Li(2), Li(2)^(-) and Li(2)^(+) increases in t...

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  5. In the of the following pairs of molecules /ions both the species are ...

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  6. Which of the following is diamagnetic ?

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  7. Number of antibonding electrons in O(2)^(-) molecular ion is :

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  8. The pair of compounds having identical shapes for their molecules is:

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  9. Which of the following properties is not shown by NO ?

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  10. In the formation of pi-bond, the atomic orbitals overlap in such a way...

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  11. The attractive force which holdes various constituents togrther in dif...

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  12. Which of the following stability order is correct ?

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  13. The number of lone pairs of electrons on central atom of H(2)O,SnCl(2)...

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  14. Which of the following changes in the respectively bond N(2) and F(2) ...

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  15. The species in which the N-atom is in a state of sp hybridisation is

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  16. Which of the following have least dipole moment?

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  17. The increassing order of bond order of O(2),O(2)^(+),O(2)^(-)and O(2)^...

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  18. HCl gas is covalent and NaCl is an ionic compound. This is because

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  19. Out of SO(2),BeCl(2),O(3),H(2)O and HgCl(2), the linear species are:

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  20. Hybridisation and shape of BrF(5) is :

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