Chemistry, asked by harpalsingh8615, 5 months ago

the first and third members in a group of transition metals have similar atomic radii,why

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Answered by pavit15

Answer:

The second and third members in each group of the transition elements have similar metallic radii. This is because of lanthanoid contraction in the members of the lanthanoid family (Z=58 to Z=71) which occupy a position along with Lanthanium (Z=57) in the periodic table

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