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Assertion : Dipole - dipole forces actin...

Assertion : Dipole - dipole forces acting between the molecules possessing permanent dipole , are weaker than ion - ion interactions .
Reason : The attractive forces decrease with the increase of distance between the dipoles .

A

If both assertion and reason are true and reason is the correct explanation of assertion .

B

If both assertion and reason are true but reason is not the correct explanation of assertion .

C

If assertion is true but reason is false .

D

If both assertion and reason are false .

Text Solution

Verified by Experts

The correct Answer is:
B
Ends of the dipoles possess 'partial charges' which are always less than the unit electronic charge `(1.6xx10^(-19)C)` present in ions. Thus, dipole-dipole forces are weaker than ion-ion interactions.
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Knowledge Check

  • Dipole-dipole force act between the molecule possessing

    A
    temporary dipole
    B
    permanent dipole
    C
    sometimes (1) and sometimes (2)
    D
    Neither (1) nor (2)

  • A molecule possessing dipole moment is

    A
    `CH_(4)`
    B
    `H_(2)O`
    C
    `BF_(3)`
    D
    `CO_(2)`

  • The molecule having permanent dipole moment is

    A
    `SF_(4)`
    B
    `XeF_(4)`
    C
    `NH_(3)`
    D
    `BF_(3)`

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