Search results

generally not considered a rare earth element." Since Promethium is man-made, I'm guessing it's NOT a rare-earth element, so I fixed it this way. If...

styles: "rare earth" - adjective and noun (21 cases); "rare earth element", "rare earth metal", etc. - two adjectives and a noun (17 cases); "rare-earth element"...

(1996). Episodes from the history of the rare earth elements. ISBN 9780792341017. Saez; Caro (1998-06-01). Rare earths. ISBN 9788489784338. Nordenskiold, B...

173.43 23:38, 1 January 2007 (UTC) I think the best answer at this point is, We don't know. Both Drake's calculations and the rare earth hypothesis are...

isotope of an element that generally is stable only at mass numbers of 39 or 41. What the article means is that elements with atomic numbers 1 through 40...

"A chemical element (sometimes called simply element) is a unique atom characterized by the number of protons in its nucleus" an element is not a unique...

percentages up to 25 percent and 38 percent respectively. are % of total rare earth element content, right? Mkweise 20:16 Feb 26, 2003 (UTC) The structures of...

There's a contradiction between this article and the current article for rare earth elements. That article says that lutetium is 200 times more abundant than...

which boldly states that "Tellurium is extremely rare, the ninth rarest metallic element on Earth." What verifiable source states that it is the ninth...

of rare earth oxides in humans come not from the rare earths themselves but from the radioactive thorium and uranium impurities, as the rare earths tend...

2006 (UTC) In the Characteristics Paragraph, it states that the element is a rare-earth metal, where in reality it is a transition metal. —The preceding...

244.122 (talk) 06:58, 24 December 2010 (UTC) 1-Light 2-Fier 3-Wind 4-Water 5-Earth Light is the first element of the world as the beginning of the world...

Britannica (boron group element or carbon group element) or Merriam-Webster (rare earth element – no such thing as an "earth element" either). I request that...

regarding two conflicting pieced of information. 1) The page states Rhenium is not naturally found on Earth, 2) followed by a statement regarding it's 'most...

Correct – I missed that. And there's approx 1.33×1050 atoms in earth (Atom#Earth), meaning that if all Earth originally was made of Curium, then only 9th...

was goddess of agriculture (or grain) and the element is one of the rare-earth elements; also Tellus, earth goddess was sometimes confounded with Ceres...

table) Group 11 element → group 11 (periodic table) Group 12 element → group 12 (periodic table) Period 1 element → period 1 Period 2 element → period 2 Period...

of Sweden identified it later in that year. Rare Earth Elements on the Web cites other independent element discoveries, but not this supposed one. Ask...

made of. we can assume that the earth has gravity 1 (the unit of gravity measurement is 1 earth gravity) and that the earth is made of varous rocks. we know...

May 2010 (UTC) I keep seeing these distiguish templates appearing on rare earth articles, I'm not really sure anyone would be daft enough to confuse Terbium...