The radius of $L a^{3 +}$ (At. No. of La = 57) is 1.06 A $^{0}$ . Which one of the following given values will be closest to the radius of $L u^{3 +}$ ?( Atomic number of Lu=71)

1.40 A^{0}

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1.06 A^{0}

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0.85 A^{0}

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1.60 A^{0}

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Solution

The correct option is B $0.85 A^{0}$
Because of lanthanoid contraction as we move from left to right in a row, radii decreases.
So radii of $L u^{+ 3}$ should be lesser than $1.06 A^{0}$ .

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Similar questions

{L a}^{3 +}

L a = 57

1.06 A

{L u}^{3 +}

L u = 71

L a^{3 +}

L u^{3 +}

L a^{3 +}

L u^{3 +}

_{57} L a^{3 +}

_{71} L u^{3 +} ?

L a^{+ 3} (Z = 57)

1.06 A^{\circ}

L u^{2 +} (Z = 71)

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