Actinoids is series of chemical elements; lanthanoids is an other different series.
Americium is a member of the actinides group.
Uranium and thorium are the two actinides that occur naturally in the Earth's crust. They are found in low concentrations and have important roles in various nuclear reactions and processes.
Lanthanides and actinides are two series of elements located at the bottom of the periodic table. They are known for their unique electron configurations, with the lanthanides having partially filled 4f orbitals and the actinides having partially filled 5f orbitals. These series contain many rare earth elements and heavy metals with important industrial, medical, and nuclear applications.
The actinides family corresponds to the 5f subshell. This subshell can hold a maximum of 14 electrons and is located in the seventh period of the periodic table. The actinides are a series of elements with atomic numbers 89 to 103.
no they are not. actinide is not part of the transition metals.
family name of rare earth element series of helium
Earth
No, it does not.
The actinide series is a group of elements in the periodic table that includes actinium, thorium, uranium, and all elements from atomic number 89 (actinium) to 103 (lawrencium). These elements are all radioactive and have similar chemical properties.
NeptuniumNeptunium
I dunnu, I googled the same thing. This guys notes says "A group of elements in the first row of the rare earth elementsin the periodic table"
Lanthanides and actinides are placed at the bottom of the periodic table to avoid significantly expanding the table and making it less practical. Placing these two series below the main body of the table helps keep the table compact and easier to use. Additionally, these elements have similar electron configurations, which is why they are grouped together in this way.