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The question is not phrased quite right -- lanthanum is a single element. It is the first of a group of 15 elements called "lanthanides", atomic numbers 57-71. They are caused by a pause in the usual periodic progression of electron orbital filling with increased atomic number, where electrons go into a shielded inner 4f orbit instead of the outermost shell. As a result, the chemical properties don't change much from element to element. Thus the lanthanides occur together in nature and are difficult to separate chemically. Most of the lanthanides were first discovered in ore from Ytterby, Sweden, thus they have names derived from that place.
Together with two other lighter elements, scandium and yttrium (which have similar chemical properties), they are known as the "rare earths" although most of them are only semi-rare.
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The type of element grouped on the left side of the periodic table is the?
Metals are grouped together to the left of the Periodic table.
Where is lanthanum located on the periodic table?
Lanthanum is located on the right to the bottom side on the periodic table.
What are the series below the periodic table called?
Lanthanum and Actinium
The element lanthanum is in what section on the periodic table of elements?
The element Lanthanum (La) is a transition metal and the first of the 'Lanthanides'.
What is Ac in the periodic table?
La - Lanthanum Ac - Actinium
The type of element grouped on the left side of the periodic table is the?
Metals are grouped together to the left of the Periodic table.
Where is lanthanum located on the periodic table?
Lanthanum is located on the right to the bottom side on the periodic table.
What are the lanthanum and actinium series set apart from the periodic table?
Lanthanum and actinium have different properties. So, they are kept apart from the periodic table.
Were are the lanthanides placed on the periodic table?
After lanthanum, thus the name.
What are the series below the periodic table called?
Lanthanum and Actinium
The element lanthanum is in what section on the periodic table of elements?
The element Lanthanum (La) is a transition metal and the first of the 'Lanthanides'.
What is Ac in the periodic table?
La - Lanthanum Ac - Actinium
What are elements on the periodic table are grouped based on?
Group are based on similar properties. The elements having same chemical properties are grouped together.
How elements are grouped in columns in the periodic table?
There are 18 groups in the Periodic Table of elements.
What are Lanthanum and Actioned series set part on the periodic table?
Lanthanum and actinoids have different properties. So they are placed seperately.
How are the properties displayed in the periodic table?
Elements with same property are grouped together. Property can be estimated by its position.
Why are things grouped together on the periodic table?
-An element is placed in that group of periodic whose group number is equal to the number of valence electrons.
