Lanthanides and Actinides.
Lanthanide elements
Two rows of elements called the "LANTHANIDES" and the "ACTINIDES".
D block elements are at the center of the periodic table; f block elements are at the bottom.
The Periodic Table of Elements.
lanthanoids and actenoids
Elements with the highest atomic mass can be found towards the bottom of the periodic table, typically in the bottom rows known as the actinide and lanthanide series. These elements include heavy elements such as uranium, thorium, and plutonium.
Sterling silver is an alloy, not pure silver. Only pure elements are shown on the periodic table.
It is named The PERIODIC TABLE. The periods being the horizontal rows The groups being the vertical columns.
The f-block elements (lanthanides and actinides, the two rows at the bottom of the periodic table) are known as inner transition elements
Generally the density of the chemical elements is increasing from the top to the bottom of the periodic table of Mendeleev.
The two sets of elements found below the Periodic Table are the Lanthanides and the Actinides, which are also known as the Inner Transition Elements. They are placed separately at the bottom of the Periodic Table to keep the table compact and organized.
The periodic table displays all known chemical elements in order of increasing atomic number.