22gaddisme 22gaddisme

12-04-2017
Chemistry

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Why are the elements 57 through 71 and 89 through 102, found separately at the bottom of the table?

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DarkPrime DarkPrime

12-04-2017

Elements from 57 to 71 are Lanthanoids and from 89 to 103 are Actinoids. Simply I would say Actinoids have less similarity in chemical properties than Lanthanoids. On the other hands, Actinoids have randomized chemical strutural bonds.

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