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Choose the correct order of ionic radius...

Choose the correct order of ionic radius from the given options (where atomic number of Ce, Pr, Eu, and Dy are 58, 59, 63, and 66 respectively) (1) `Ce^(3+)` >`Pr^(3+)` >`Dy^(3+)` > `Eu^(3+ )` (2) `Pr^(3+)` >`Dy^(3+)`> `Eu^(3+)` > `Ce^(3+)` (3) `Dy^(3+)`> `Eu^(3+)` > `Ce^(3+)` > `Pr^(3+)` (4) `Ce^(3+)` > `Pr^(3+)` > `Eu^(3+)` > Dy^(3+) `

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