Lantanoidákat
Lantanoidákat is a term used in chemistry to refer to a group of 15 metallic chemical elements that follow lanthanum in the periodic table, from cerium (atomic number 58) to lutetium (atomic number 71). These elements are characterized by having their inner 4f electron shells progressively filled. While lanthanum itself is sometimes included in the group, it is technically an alkaline earth metal.
The lantanoidákat share many similar chemical properties due to their electron configurations, making their separation a
These elements are found in varying concentrations in the Earth's crust, often occurring together in mineral
Lantanoidákat have numerous important applications. Cerium is used in catalytic converters and as a polishing agent.