Question

what is transition contraction????

Answer 1

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Hi dear hers is your answer ☺

Lanthanide contraction is a term used in chemistry to describe the greater-than-expected decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum (La), to 71, lutetium (Lu).

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Answer 2

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lanthanide and actinides contraction called transition contraction.

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