Question

Lanthonoides and Actionides are given selarte position in the periodic table.
(a)Which of them are known as rare earths?
(b)Lanthanoides andActinoides are together known as______?
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Answer 1

Answer:

● The 14 elements (numbers 58 to 71) of the lanthanide series are also known as the rare earth elements.

● Lanthanoides and Actinoides are together known as inner transition elements.