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HF is the weakest halogen hydracid eve...

HF is the weakest halogen hydracid even though fluorine is the most electronegative halogen - explain.

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The bond dissociation enthalpy of HF is the highest . The `F^(-)` inos produce bifluoride ion `(HF_(2)^(-))` through hydrogen bonding with
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CHHAYA PUBLICATION-P-BLOCK ELEMENTS-VERY SHORT ANSWER TYPES (VSA )
  1. Which halogen hydracid cannot be stored in a glass bottle ? Why ?

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  2. Which halogen form only one oxacid ?

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  3. HF is the weakest halogen hydracid even though fluorine is the mos...

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  4. Write the compound of bleacing powder and mention its two impor...

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  5. Which hydrogen halide froms HX(2)^(-) ions ? Why ?

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  6. Arrage F(2), CI(2), Br(2) and I(2) in the order of increasing bon...

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  7. Give two exapmle of interhalagone cation and two of interhalogen ...

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  8. Name the substance obtained at the cathode and at the anode when...

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  9. Why is iodine more soluble in KI solution than in water ?

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  10. Mention the structure of CIF(3),CIF(5) & IF(7) molecules.

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  11. Mention the state of hybridisation of the central CI atom in the ...

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  12. Which one is the stronger oxoacid of chlorine ?

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  13. What is called aqua regia ?

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  14. Give example of two which react with HCI to give white precipia...

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  15. Give example of two salts which react with HCI to give white ...

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  16. Why the compounds of fluorine with oxygen are called fluorides o...

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  17. Boiling points of interhalogen are little higher as compared to p...

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  18. Name the most abundant noble gas in air and the noble gas which ...

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  19. What is the main commerical source of helium ?

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  20. What is the value of C(p)// C(V) of noble gas ?

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