astatine is the most rarest element on earth.
astatine is the most rarest element on earth.
what is the most rarest element on earth?
astatine
by way of examples of the term meaning the above considerations rather than their scarcity, cerium is the 26th most abundant element in the earth's crust and more abundant than copper, neodymium is more abundant than gold; thulium (the second least common naturally occurring lanthanide) is more abundant than iodine, which is itself common enough for biology to have evolved critical usages thereof, and even the lone radioactive element in the series, promethium, is more common than the two rarest naturally occurring elements, francium and astatine, combined. despite their abundance, even the technical term "lanthanides" could be interpreted to reflect a sense of elusiveness on the part of these elements, as it comes from the greek λανθανειν ("lanthanein"), "to lie hidden". however, if not referring to their natural abundance, but rather to their property of "hiding" behind each other in minerals, this interpretation is in fact appropriate. the etymology of the term must be sought in the first discovery of lanthanum, at that time a so-called new rare earth element "lying hidden" in a cerium mineral, and it is an irony that lanthanum was later identified as the first in an entire series of chemically similar elements and could give name to the whole series. the term "lanthanide" was introduced by victor goldschmidt in 1925.
lanthanide
bombastium is a fictional chemical element. its atomic number and atomic symbol are unknown. bombastium is stated to be the rarest element in the world. even though it is very coveted, its usage potential is not entirely known. one characteristic is that it tastes different every time you try it, and scientists eventually discovered that one atom of bombastium dropped into a barrel of water becomes one barrel of ice cream - a different flavor of ice cream each time. the element is orange-brown in color and is about the size of a soccer ball. to avoid evaporation, bombastium must be kept frozen.
donald duck universe