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HF2^- ion exists but HBr2^- ion does not...

`HF_2^-` ion exists but `HBr_2^-` ion does not explain.

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UNITED BOOK HOUSE-MODEL QUESTION PAPER 8-EXERCISE
  1. Is there any change in hybridisation of B and N atoms as a result of t...

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  2. The percentage of ionic character of LiH is 76.81% and the bond length...

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  3. HF2^- ion exists but HBr2^- ion does not explain.

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  4. (i) Any real gas behaves ideally at very low pressure and high tempera...

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  5. State Daltons partial pressure laws and derive partial pressure and to...

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  6. Calculate the bond energy of O-H bond in H(2)O(g) at the standard stat...

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  7. Calculate the bond energy of O-H bond in H(2)O(g) at the standard stat...

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  8. The latent heat of fusion of ice at 0^@C is 6025.24 J. mol^-1. Calcula...

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  9. What will be the change in entropy in an irreversible cyclic process ?

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  10. What is the oxidation number of Fe atom in K4[Fe(CN)6] molecule?

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  11. Balance the following Chemical equation by oxidation number method :-C...

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  12. Balance by ion electron method : Zn + NaNO3 rarr Na2ZnO2 + NH3 + H2O

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  13. Mention the oxidation number of Cr atom in CrO5 molecule.

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  14. What do you mean by ortho and para hydrogen ? explain why the chemical...

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  15. Lithium forms monoxide while sodium forms peroxide in the presence of ...

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  16. Which alkali metal is used for making photoelectric cells?

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  17. Both alkaline earth metals and their salts are diamagnetic in nature e...

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  18. What happens when sodium peroxide dissolves in water.

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  19. Dipole moment of vinyl chloride (CH2 = CHCI) is less than ethyl chlori...

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  20. Arrange the following ions in order of increasing basicit :- CH3CH2, C...

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