Question

where are the Lanthanides and Actiniders series placed in the modern periodic table​

Answer 1

Answer:

Lanthanides and actinides are in periods 6 and 7, respectively. Generally, they are placed underneath the periodic table. The lanthanides are between Barium and Hafnium. The actinides are between Radium and Rutherfordium.

Explanation:

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Answer 2

The lanthanides and actinides

are located mostly in the "f-block" of the periodic table.

The actinides are most known for the elements uranium and plutonium which are used in nuclear reactor.

Lanthanides are used in products such as hybrid cars, superconductors, and permanent magnets.