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QAIPMT-2003-Ch-2695: NEET 2003 Chemistry - Class 12 AIPMT-2003-Ch-2695 Solution: The correct order of ionic radii of $Y^{3+}$, $La^{3+}$,…

The correct order of ionic radii of

Y^{3+}

La^{3+}

Eu^{3+}

and

Lu^{3+}

is (Atomic nos. Y = 39, La = 57, Eu = 63, Lu = 71)

Multiple Choice Options

A $Y^{3+}<La^{3+}<Eu^{3+}<Lu^{3+}$
B $Y^{3+}<Lu^{3+}<Eu^{3+}<La^{3+}$
C $Lu^{3+}<Eu^{3+}<La^{3+}<Y^{3+}$
D $La^{3+}<Eu^{3+}<Lu^{3+}<Y^{3+}$

Step-by-Step Verified Solution

In lanthanide series there is a regular decrease in the atomic as well as ionic radii of trivalent ions (M 3+ ) as the atomic number increases. Although the atomic radii do show some irregularities but ionic radii decreases from La(103 pm) to Lu (86pm).

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QAIPMT-2003-Ch-2695: NEET 2003 Chemistry - Class 12 AIPMT-2003-Ch-2695 Solution: The correct order of ionic radii of \(Y^{3+}\), \(La^{3+}\),…

Multiple Choice Options

Step-by-Step Verified Solution

Related Learning Resources & Exam Preparation