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Which of the following has unchanged val...

Which of the following has unchanged valency?

A

H

B

Na

C

Fe

D

Oxygen

Text Solution

Verified by Experts

The correct Answer is:
B
Na has only valency +1
H has valencies +1,0, -1
Fe has valencies +2, +3 etc.
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DINESH PUBLICATION-CHEMICAL BONDING AND MOLECULAR STRUCTURE-REVISION
  1. Which of the following phenomena will occur when two atoms of the elem...

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  2. Which of the following is electron deficient?

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  3. Which of the following has unchanged valency?

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  4. Which of the following molecules is linear ?

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  5. Which of the following is not paramagnetic ?

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  6. NH(3)and BF(3)from adduct readily because they from

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  7. A molecule in which sp^2 hybrid orbitals are used by the central atom ...

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  8. The molecular species having highest bond order is

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  9. The AsF5 molecule is trigonal bipyramidal. The orbitals used by As for...

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  10. Which of the following molecule/ions has triangular pyramidal shape ?

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  11. The nature of interparticle forces in benzene is

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  12. The angle between the covalent bonds is maximum in :

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  13. One of the following is having square planar structure

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  14. The carbon-carbon link in acetylene contains

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  15. Paramagnetism is exhibited by molecules which

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  16. The bond angle around central atom which uses sp^(2) hybridisation is ...

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  17. In the resonating structures of benzene, the number of sigma and pi bo...

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  18. The high density of water compared to ice is due to

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  19. Which one has covalent as well as ionic valency?

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  20. How many sigma and pi bonds are present in tetracyanoethylene ?

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