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Which of the following is paramagnetic?...

Which of the following is paramagnetic?

A

`CN^(-)`

B

`NO^(+)`

C

`CO`

D

`O_(2)^(-)`

Text Solution

Verified by Experts

The correct Answer is:
D
`O_(2)^(-):KK(sigma2s)^(2)(sigma^(**)2s)^(2)(sigma2p_(z))^(2)(pi2p_(x))^(2)(pi2p_(y))^(2)(pi^(**)2p_(x))^(2)(pi^(**)2p_(y))^(1)`
It has one unpaired electron and hence is paramagnetic.
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MODERN PUBLICATION-CHEMICAL BONDING AND MOLECULAR STRUCTURE-OBJECTIVE TYPE QUESTIONS (B. MULTIPLE CHOICE QUESTIONS)
  1. Bond order of 1.5 is shown by:

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  2. Which of the following is a polar molecule

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  3. Which of the following is paramagnetic?

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  4. Which one of the following molecules contains no pi - bond ?

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  5. The bond orders for O(2)^(+) and C(2) respectively are

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  6. Which of the following molecules has the maximum dipole moment ?

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  7. Which of the following species has plane tringular shape ?

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  8. Which of the following sets of molecules contains the same number of l...

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  9. Which one of the following does not match with respect to the shape of...

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  10. Find the pair that has the same bond order with diamagnetic and parama...

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  11. Decreasing order of stability of O(2), O(2)^(-), O(2)^(+) and O(2)^(2-...

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  12. In which of the following pairs, both the species are not isostructura...

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  13. Which of the following pairs of ions are isoelectronic and isostructur...

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  14. The correct bond order in the following species is:

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  15. Maximum bond angle at nitrogen is present in which of the following ?

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  16. Consider the molecules CH(4),NH(3) and H(2)O. Which of the given state...

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  17. Predict the correct order among the following-

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  18. Which one of the following compounds shows the presence of intramolecu...

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  19. The correct geometry and hybridisation for XeF(4) are

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  20. The hybridization of atomic orbitals of nitrogen is NO(2)^(+), NO(3)^(...

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