Dipole moment and ionisation constant are maximum in case of 

  • Option 1)

    HF, HF

  • Option 2)

    HF, HIHF, HI

  • Option 3)

    HI, HF

  • Option 4)

    HI,HI

 

Answers (1)

As we learnt in 

Acidic strength of Hydride -

HI>HBr>HCl>HF

- wherein

Increases down the group 

 

Dipole moment of Hydride -

HF>HCl>HBr>HI

- wherein

Deacreses due to decrease in electronegativity difference 

 

Dipole moment is maximum when electronegative difference is maximum i.e. in case of HF.

Ionization constant of HI>HF as it's value increases down the group due to weakening of bond. 

 

 


Option 1)

HF, HF

This answer is incorrect

Option 2)

HF, HIHF, HI

This answer is correct

Option 3)

HI, HF

This answer is incorrect

Option 4)

HI,HI

This answer is incorrect

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