Which of the following is correct in ord...

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

`I^(o+) lt I lt I^(ɵ)`

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

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

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

`MgltNa^+ltF^-ltAl`

`Na^+ltAlltMgltF^-`

`Na^+ltF^-ltAlltMg`

`Na^+ltF^-ltMgltAl`

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

`Mg lt Na^(+) lt F^(-) lt Al`

`Na^(+) lt Al lt Mg lt F^(-)`

`Na^(+) lt F^(-) lt Al lt Mg`

`Na^(+) lt F^(-) lt Mg lt Al`

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

`NH_(3) lt PH_(3) lt AsH_(3)`

`ArH_(3) lt PH_(3) lt NH_(3)`

`PH_(3) lt AsH_(3) lt NH_(3)`

`NH_(3) lt AsH_(3) lt PH_(3)`