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faiz4000
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why aren't the lanthanide and actinide series included in the periodic table? is there some non periodicity in there elements?
faiz4000 said:why aren't the lanthanide and actinide series included in the periodic table? is there some non periodicity in there elements?
Lanthanides and actinides are two series of elements found in the periodic table. They are also known as rare earth elements and are located at the bottom of the periodic table, below the main body of elements.
Lanthanides and actinides are excluded from the main body of the periodic table because they have similar chemical properties and are placed at the bottom of the table for convenience. This helps to keep the periodic table compact and easier to read.
The lanthanide series contains 15 elements, from lanthanum (atomic number 57) to lutetium (atomic number 71). The actinide series contains 15 elements as well, from actinium (atomic number 89) to lawrencium (atomic number 103).
Lanthanides and actinides are called "rare earth elements" because they are difficult to separate from each other and from other elements, making them rare and valuable. They are also often found in low concentrations in the earth's crust.
Lanthanides and actinides have a variety of uses in everyday life. Some common uses include: as catalysts in chemical reactions, in the production of electronics and magnets, in medical imaging and treatments, and in the production of nuclear energy. Lanthanides are also used in the production of colored glass and ceramics, while actinides are used in smoke detectors and space exploration.