57 to 94 elements in periodic table full information
Answers
Answered by
0
The lanthanide and actinide series make up the inner transition metals.The lanthanide series includes elements 58 to 71, which fill their 4f sublevel progressively.The actinides are elements 89 to 103 and fill their 5f sublevel progressively.Actinides are typical metals and have properties of both the d-block and the f-block elements, but they are also radioactive.Lanthanides have different chemistry from transition metals because their 4f orbitals are shielded from the atom’s environment.
Terms
lanthanide contractionThe progressive decrease in the radii of atoms of the lanthanide elements as the atomic number increases; evident in various physical properties of the elements and their compounds.lanthanideAny of the 14 rare earth elements from lanthanum to lutetium in the periodic table. Because their outermost orbitals are empty, they have very similar chemistry. Below them are the actinides.actinideAny of the 14 radioactive elements of the periodic table that are positioned under the lanthanides, with which they share similar chemistry.
Terms
lanthanide contractionThe progressive decrease in the radii of atoms of the lanthanide elements as the atomic number increases; evident in various physical properties of the elements and their compounds.lanthanideAny of the 14 rare earth elements from lanthanum to lutetium in the periodic table. Because their outermost orbitals are empty, they have very similar chemistry. Below them are the actinides.actinideAny of the 14 radioactive elements of the periodic table that are positioned under the lanthanides, with which they share similar chemistry.
Similar questions