1.

The correct order of ionic radii of Y^(3+), La^(3+),Eu^(3+) and Lu^(3+) is

Answer»

`Y^(3+) LT La^(3+) lt EU^(3+)ltLu^(3+)`
`Y^(3+) lt LU^(3+) lt Eu^(3+)ltLa^(3+)`
`Lu^(3+) lt Eu^(3+) ltLa^(3+) lt Y^(3+)`
`La^(3+) lt Eu^(3+) lt Lu^(3+) ltY^(3+)`

Answer :C


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