LANTHANOIDS AND ACTINOIDS
What Is Meant By Lanthanoids And Actinoids?
Definition. Lanthanoids: Lanthanoids are Chemical Elements That Can Be Found In The Lanthanide Series Of The F Block In The Periodic Table Of Elements. Actinoids: Actinoids are Chemical Elements That Can Be Found In The Actinide Series Of The F Block In The Periodic Table Of Elements.
Why Are Lanthanoids And Actinoids Placed At The Bottom Of The Periodic Table?
The Reason Why Lanthanides And Actinides are Located At The bottom of The Periodical table is Because Of Their Properties And In The Block In Which Electrons Fill Up. The lanthanides include Elements 58 To 71 (fill Out The 4f Subshell) And The actinides include Elements 89 To 103 (fill Out The 5f Subshell).
What Is Special About Lanthanides And Actinides?
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.
Why F Block Elements Are Kept Separately?
Lanthanides And Actinides Are Located At The Bottom Of The Periodical Table For That We Need To Understand Their Properties And What Group They Belong To. Lanthanides And Actinides Are Known As Inner-Transition Metals And They Have Different Properties Compared To Other Elements. Inner-Transition Metals Were Only Discovered Recently And Not Much Is Known About Them. It Is Very Important To Understand Why They Are Located At The Bottom Because It Plays A Big Role In The Shape, Size And History Of Periodic Table And Why They Have Been Separated.
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