1.

Select the correct order of mobility in aqueous medium.

Answer»

`[Li(H_(2)O)_(x)]^(+)gt[LE(H_(2)O)_(y)]^(+2)`
`[Li(H_(2)O)_(x)]^(+)]lt[Be(H_(2)O)_(y)]^(+2)`
`[Li(H_(2)O)_(x)]^(+)=[Be(H_(2)O)_(y)]^(+2)`
Informations are not sufficient to predict the mobility

Solution :Mobility: `[Li(H_(2)O)_(x)]^(+)gt[Be(H_(2)O)_(y)]^(+2)`
`rarr+ve` CHARGE DENSITY increases.
`rarr` Zeft increases.
`rarr` Size of `Be^(+2)` decreaes
`rarr` Surrounding `H_(2)O` molecule increases.
`rarr` BULKY nature increaes.
`rarr` Mobility DECREASES.


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