General Knowledge - General Science - Discussion

Thank you @Shristi.

What is actinide?

Than you @Shristi.

Actinides or actinoids (IUPAC Nomenclature) are:

Actinium (Z=89).
Thorium (Z=90).
Protactium (Z=91).
Uranium (Z=92).
Neptunium (Z=93).
Plutonium (Z=94).
Americium (Z=95).
Curium (Z=96).
Berkelium (Z=97).
Californium (Z=98).
Einstenium (Z=99).
Ferium (Z=100).
Mendelevium (Z=101).
Nobelium (Z=102).
Lawrencium (Z=103).

Lanthanide > 58 to 71.

Actinides > 90 to 103.

What is the Only one element in the Lanthanide series?

Atomic Number of lanthanides?

The actinide or actinoid (IUPAC nomenclature) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium.

There are two rows under the table. The Lanthanide and Actinide series. The Lanthanide series can be found naturally on Earth. Only one element in the series is radioactive. The Actinide series is much different. They are all radioactive and some are not found in nature. Some of the elements with higher atomic numbers have only been made in labs. There are special laboratories across the world that specialize in experimenting on elements. Some of these particle accelerators have pounded atomic particles into elements with lower atomic numbers. The buildup of additional parts creates short-lived elements.