Rubidium (Rb) is an alkali metal.
No, stainless steel is not a nonmetallic element. It is a metallic alloy composed mainly of iron, with a minimum of 10.5% chromium to give it its corrosion-resistant properties.
Limestone is a nonmetallic mineral. It is a sedimentary rock primarily composed of calcium carbonate, which is a chemical compound with a nonmetallic element (calcium) and a nonmetallic element (carbon) bonded together. Metallic minerals, on the other hand, are composed of metals or have metallic properties. Limestone does not fall into this category.
An overwhleming amount of steel is iron; it is therefore metallic.
Assuming that "least nonmetallic" means the same as "most metallic", francium.
A metalloid is an element that has both metallic and nonmetallic properties. When combined they form an alloy. Metalloids are usually semiconductors.
The items that contain more than one element and have metallic properties are known as alloys. They can be an intermetallic compound that lacks phase boundaries, a metallic phase mixture, or a solid element solution.
An alloy contains at least one metallic element. Alloying involves mixing a metal with one or more other elements to enhance its properties, such as strength or corrosion resistance.
Rubidium (Rb) occurs naturally in minerals such as Pollucite, Carnallite and Lepidolite.
Rubidium. Metallic character increases as you move down and to the left on the periodic table.
A good example may be mercury, which is a metal but is a liquid at room temperature, a unique feature not found in other metals.
Cadmium.
Antimony is a metalloid which means that it has metallic and nonmetallic properties and it is element 51 in the Periodic Table lying in the diagonal metalloids in the p group. The metallic and nonmetallic properties may be, for example, that it is grey and shiny like a metal but it may also be brittle and not conduct heat and electricity like a nonmetal.