Question

The correct increasing order of ionic radii of the following \(Ce^{3+}, La^{3+}, Pm^{3+}\) and \(Yb^{3+}\) is

• A. \(Yb^{3+} < Pm^{3+} < Ce^{3+} <La^{3+} \)
• B. Ce\(^{3+}\) < Yb\(^{3+}\) < Pm\(^{3+}\) < La\(^{3+}\)
• C. Yb\(^{3+}\) < Pm\(^{3+}\) < La\(^{3+}\) < Ce\(^{3+}\)
• D. Pm\(^{3+}\) < La\(^{3+}\) < Ce\(^{3+}\) < Yb\(^{3+}\)

Answer 1

The Correct Option is A

The correct option is (A):\(Yb^{3+} < Pm^{3+} < Ce^{3+} <La^{3+} \)