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The set representing the correct order o...

The set representing the correct order of ionic radii is

A

`Li^(+) gt Be^(2+) gt Na^(+) gt Mg^(2+)`

B

`Li^(+) gt Na^(+) gt Mg^(2+) gt Be^(2+) `

C

`Mg^(2+) gt Be^(2+) gt Li^(+) gt Na^+`

D

`Na^(+) gt Li^(+) gt Mg^(2+) gt Be^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
D

The di positive charge cation is smaller than mono positive charge cation due to more effective nuclear charge and ionic size decreases down the group.
`Na^(+) gt Li^+` (down the group)
`Mg^(2+) gt Be^(2+)` (down the group)
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Knowledge Check

  • The set representing the correct order of ionic radius is :

    A
    `Na^(+) gt Mg^(2+) gt Al^(3+) gt Be^(2+) gt Li^(+)`
    B
    `Na^(+) gt Li^(+) gt Mg^(2+) gt Al^(3+) gt Be^(2+)`
    C
    `Na^(+) gt Mg^(2+) gt Al^(3+) gt Li^(+) gt Be^(2+)`
    D
    `Na^(+) gt Mg^(2+) gt Li^(+) gt Be^(2+) gt Al^(3+)`
  • The set representing the correct order of ionic radius is

    A
    `Na^(+) gt Mg^(2+) gt Al^(3+) gt Li^(+) gt Be^(2+) `
    B
    `Na^(+) gt Li^(+) gt Mg^(2+) gt Al^(3+) gt Be^(2+) `
    C
    `Na^(+) gt Mg^(2+) gt Li^(+) gt Al^(3+) gt Be^(2+) `
    D
    `Na^(+) gt Mg^(2+) gt Li^(+) gt Be^(2+) `
  • The set representing the correct order of ionic radius is

    A
    `Li ^(+) gt Be ^(2+) gt Na ^(+) gt Mg ^(2+)`
    B
    `Na ^(+) gt Li ^(+) gt Mg ^(2+) gt Be ^(2+)`
    C
    `Li ^(4+) gt Na ^(+) gt Mg^(2+) gt Be ^(2+)`
    D
    `Mg ^(2+) gt Be ^(2+) gt Li ^(+) gt Na ^(+)`
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