In what periods are the lanthanides and actinides? Where are they placed in the periodic table?

1 Answer
Tartar C.
Apr 26, 2017

Lanthanides and actinides are in periods 6 and 7, respectively.

Explanation:

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.

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