silver
Ytterbium is a reactive element, but it is primarily reactive with air and water, rather than being highly reactive in general. It is not as reactive as some other metals like alkali metals such as sodium or potassium.
No, lithium is not considered a rare earth metal. It is a metal, but it is not classified as a rare earth element.
Radium is the most reactive in this group.
The most chemically reactive metals are the alkali metals. Francium is the most reactive of these and of all metal (although it is present on earth only in exceedingly small quantities, due to its radioactivity).The most reactive element available in useful quantities in Flourine.
Holmium is a rare earth metal.
Francium (Fr), an extremely rare radioactive element
The most explosive alkali earth metal on the planet is Francium. No actually Francium is still below Cesium. And Cesium is the second explosive on the planet. No one actually knows what the most explosive alkali metal is because they are not legally allowed to test it.
It is a metal.It is a rare earth metal.
Einsteinium is a transition metal.
The least reactive metal in group 1 of the periodic table is francium. Francium is highly radioactive and has a very short half-life, making it extremely rare and difficult to study its chemical properties.
Many classifications exists: metal or nonmetals, solids or gaseous, reactive or not reactive, valency number, radioacive or not, common or rare, etc.
No, thorium is not a rare earth metal. It is a radioactive metal that is relatively abundant in the Earth's crust. Rare earth metals are a group of 17 elements that have similar chemical properties and are typically found together in nature.