These are the lanthanides or the 4f block; they should include lanthanum were it not for a contraction that lags lanthanum in the d block.
The inner transition metals belong to the f block on the periodic table. Examples of f block elements are cerium, gadolinium, terbium and lutetium.
Sugar
One of the examples of cerium is a lighter flint and a fire starter.
Lutetium see link
Yes, cerium most commonly combines with oxygen (CeO2)
The lanthanide is the 14 elements with atomic number from 58 ( cerium , Ce ) to 71 ( lutetium , Lu ) . Because these elements are so similar in chemical and physical properties
Lanthanide: The first series of inner transitionelements which goes from cerium to lutetium.
The inner transition metals belong to the f block on the periodic table. Examples of f block elements are cerium, gadolinium, terbium and lutetium.
The lantanides (6f-block elements) start, after 57Lantanium, with atom number 58, Ce, to end with 71Lu
Sugar
One of the examples of cerium is a lighter flint and a fire starter.
cerium
Lithium,Beryllium,Rubidium,Yttrium,Ruthenium,Rhodium,Silver,Antimony,Tellurium,Thallium,Mercury,Osmium,Barium,Cesium,Lanthanum,Cerium,Praseodymium,NeoDyMium,Samarium,Europium,Gadolinium,Terbium,Dysprosium,Holmium,Erbium,Thulium,Ytterbium,Lutetium.
Lutetium
Cerium is a soft gray metal of the rare-earth group of elements. At room temperature it's a solid.
Lutetium see link
For most practical purposes, lutetium can be regarded as stable, though it is slightly radioactive. 97.41% of lutetium found in nature is stable, and 2.59% is of an isotope with a half life of 37,800,000,000 years. Like all other elements, lutetium has synthetic radioactive isotopes.