Which of the following is correct statement?....
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0Which of the following is correct statement?
\( \mathrm{P} \)
(1) Size of \( \mathrm{Gd}^{3+} \) is more than \( \mathrm{Er}^{3+} \)
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(2) Size of \( \mathrm{Ho}^{3+} \) is more than \( \mathrm{Yb}^{3+} \)
(3) Size of \( \mathrm{Pr}^{3+} \) is more than \( \mathrm{Sm}^{3+} \)
(4) All of these
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