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Which of the following is correct in ord...

Which of the following is correct in order of increasing size ?

A

`I^(o+) lt I lt I^(ɵ)`

B

`Fe lt Fe^(2+) lt Fe^(3+)`

C

`Fe^(3+) lt Fe^(2+) lt Fe`

D

All of these

Text Solution

Verified by Experts

The correct Answer is:
A, C
a. Size of negative ion `gt` parent neutral atom `gt` size of positive ion
c. Size of neutral parent atom `gt` size of less positive ion `gt` size of more positive ion
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Knowledge Check

  • Which of the following is correct order of increase of size?

    A
    `MgltNa^+ltF^-ltAl`
    B
    `Na^+ltAlltMgltF^-`
    C
    `Na^+ltF^-ltAlltMg`
    D
    `Na^+ltF^-ltMgltAl`

  • Which one of the following is correct order of increase of size?

    A
    `Mg lt Na^(+) lt F^(-) lt Al`
    B
    `Na^(+) lt Al lt Mg lt F^(-)`
    C
    `Na^(+) lt F^(-) lt Al lt Mg`
    D
    `Na^(+) lt F^(-) lt Mg lt Al`

  • Which of the following is the correct order of increasing enthalpy of vaporisation ?

    A
    `NH_(3) lt PH_(3) lt AsH_(3)`
    B
    `ArH_(3) lt PH_(3) lt NH_(3)`
    C
    `PH_(3) lt AsH_(3) lt NH_(3)`
    D
    `NH_(3) lt AsH_(3) lt PH_(3)`