Question

Lanthanoids and actinoids are placed in separate rows at the bottom of the periodic table.Explain.

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Answer 1

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$\large\purple{Question}$

Lanthanoids and actinoids are placed in separate rows at the bottom of the periodic table.Explain.

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Lanthanoids and actinoids are placed in separate rows at the bottom of the periodic table to maintain its structure and to preserve the principle of classification by keeping elements with similar properties in a single column.