The steady decreases in the ionic radius from L a 3 + to L u 3 + is termed as

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The steady decreases in the ionic radius from $L a^{3 +}$ to $L u^{3 +}$ is termed as

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The steady decreases in the ionic radius from $L a^{3 +}$ to $L u^{3 +}$ is termed as lanthanoid contraction.Consequences are :Similar physical chemical properties among Lanthanoids .The almost identical radii of Zr (160 pm) and Hf (159 pm)

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