Search results
Results From The WOW.Com Content Network
The name of the element is derived from the Greek word χρῶμα, chrōma, meaning color, [12] because many chromium compounds are intensely colored. Industrial production of chromium proceeds from chromite ore (mostly FeCr 2 O 4) to produce ferrochromium, an iron-chromium alloy, by means of aluminothermic or silicothermic reactions ...
118 chemical elements have been identified and named officially by IUPAC.A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z).
Current symbol is F. The symbol Fl is now used for flerovium. [nb 1] Fr: Florentium: 61: Discredited claim to discovery of promethium. The symbol Fr is now used for francium. [nb 2] [5] G: Glucinium: 4: Former name for beryllium. [nb 1] Gh: Ghiorsium: 118: Discredited claim to discovery of oganesson. [nb 2] Gl: Glucinium: 4: Former name for ...
Group 6, numbered by IUPAC style, is a group of elements in the periodic table. Its members are chromium (Cr), molybdenum (Mo), tungsten (W), and seaborgium (Sg). These are all transition metals and chromium, molybdenum and tungsten are refractory metals.
41 of the 118 known elements have names associated with, or specifically named for, places around the world or among astronomical objects. 32 of these have names tied to the places on Earth, and the other nine are named after to Solar System objects: helium for the Sun; tellurium for the Earth; selenium for the Moon; mercury (indirectly), uranium, neptunium and plutonium after their respective ...
The first letter is always capitalized. While the symbol is often a contraction of the element's name, it may sometimes not match the element's English name; for example, "Pb" for lead (from Latin plumbum) or "W" for tungsten (from German Wolfram). Elements which have only temporary systematic names are given temporary three-letter symbols (e.g ...
Periodic table of the chemical elements showing the most or more commonly named sets of elements (in periodic tables), and a traditional dividing line between metals and nonmetals. The f-block actually fits between groups 2 and 3 ; it is usually shown at the foot of the table to save horizontal space.
Term symbols for the ground states of most chemical elements [3] are given in the collapsed table below. [4] In the d-block and f-block, the term symbols are not always the same for elements in the same column of the periodic table, because open shells of several d or f electrons have several closely spaced terms whose energy ordering is often ...