Question

What are lanthanides and actinaids​

Answer 1

Answer:

Lanthanides and actinides are elements with unfilled f orbitals. Lanthanides are all metals with reactivity similar to group 2 elements. Actinides are all radioactive elements. Lanthanides are used in optical devices (night vision goggles), petroleum refining, and alloys.

Answer 2

Explanation:

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1) Lanthanides and actinides are elements with unfilled f orbitals. Lanthanides are all metals with reactivity similar to group 2 elements.

2) Actinides are all radioactive elements. Lanthanides are used in optical devices (night vision goggles), petroleum refining, and alloys.