This was done only save space. Because there are so many elements in each Group (Group IIIB)--numbering 14 each--the Periodic Table would be twice as wide than as we know it.
No, the actinide and lanthanide series are not considered transition metals. Transition metals refer to elements found in the d-block of the periodic table, whereas actinides and lanthanides are part of the f-block. The transition metals are known for their characteristic properties like variable oxidation states and the formation of colored compounds.
The rare earth metals are located in the lanthanide series of the periodic table, which is found at the bottom of the table.
The Lanthanides are a Period of Elements in the sixth period. They all metals. They all have variable oxidation states, but oxudation state '3' is the most stable. They lie in the Periodic Table between Group (II) (Alkaline Earth metals) and the Transition Metals.
Actinide and lanthanide electrons are typically found in f-orbitals. These orbitals are part of the inner electron shells and have a distinctive shape compared to the s and p orbitals.
Carbon is not a family name; it is a chemical element that is found in group 14 of the periodic table. It is not part of the rare earth elements series, which are a group of 17 elements in the lanthanide series and actinide series of the periodic table.
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.
Most scientists describe a "transition metal" as any element in the d-block of the periodic table, which includes groups 3 to 12 on the periodic table. The f-block 'lanthanide and actinide' series are also considered transition metals and are called "inner transition metals".
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.
Heavy metals are typically found in the middle of the periodic table. These heavy metals are often also transition metals.
The family that samarium belongs to is known as the Lathanide family. This family consists of 15 metals also known as the rare earth metals.
Metalliods are found at the center of the periodic table.
Non-metals and metalloids are found to the right on the periodic table.