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According to the IUPAC terminology, the lanthanoid (previously lanthanide) series comprises the fifteen elements with atomic numbers 57 through 71, from lanthanum to lutetium. All lanthanoids are f-block elements, corresponding to the filling of the 4f electron shell, except for lanthanum which is a d-block lanthanoid. The lanthanoid series (Ln) is named after lanthanum. From Wikipedia under the
GNU Free Documentation License  indiastudycircle.blogspot.com Gugls Wed, 19 Nov 2008 19:03:00 GM Inner Transition Elements . Lanthanoids. - Electronic configuration, oxidation states, chemical reactivity and . lanthanoid. contraction. Actinoids - Electronic configuration and oxidation states. UNIT 17: CO-Ordination compounds introduction ...  mindat.org Pavel Kartashov hu, 01 Oct 2009 18:43:29 GM The single native . lanthanoid. known for now is native Ce, which we had found in Lunar regolith. Unfortunately its size is ~1 micrometer. Real native W was twice met on Prepolar Ural (the second find was mine 8-)) and it isn't product of ...  cbsequestionpaper.com admin Sat, 07 Feb 2009 16:04:14 GM (iii) from element to element the actinoid contraction is greater than the . lanthanoid. contraction. (iv) the e0 value for the mn3+/mn2+ couple is much more positive than that for cr3+/cr2+. (v) scandium (z = 21) does not exhibit variable ... From Google Blog Search: "lanthanoid"  marketwire.com Market Wire (press release) The term "rare earth elements" is a trade name for the 15 members of the lanthanoid series, plus yttrium, characterized by similar physical and chemical properties. Grades are usually reported as calculated rare earth oxides. ... From Google News Search: "lanthanoid" mnemonic to learn the lanthanoid and actinoid series??? Q. Can anyone help me learn the d and f block elements...With the help of a mnemonic or a memory aid...HELP ME... Asked by meetan - Thu Feb 28 00:37:47 2008 - - 2 Answers - 0 Comments A. Mnemonic is the method to improve memory in psychology in which blocks are prepared such to sumerise the sentences or the headings of points or starting points of the items. Answered by Ram D - Thu Feb 28 00:48:02 2008 Should Jadarite actually be considered Kryptonite? or should the true kryptonite be the one from Superman 3? Q. There are Two Recipes for Kryptonite. the one from Superman 3(Actually Radioactive) the one from Superman Returns (White powder) Which is the true Kryptonite? Scientists have recently declared that they have found real Kryptonite. sodium lithium boron silicate hydroxide is officially called Jadarite. they are claiming this to be kryptonite based on the the movie Superman Returns. But in Superman 3: Superman vs. Superman, while the Molecular Structure is not given, the chemical composition of the kryptonite molecule is given as Plutonium: 15.08% (Pu: Element 94, Actinoid Metal) Tatalum: 18.06% (an alternate spelling of Tantalum; Ta: Element 73, Metal) Xenon: 27.71% (Xe: Element 54, Noble Gas) Promethium: 24.02% (Pm: Element 6, Lanthanoid… [cont.] Asked by Kuraimizu - Thu Apr 26 18:57:45 2007 - - 3 Answers - 1 Comments A. Yeah. Since Richard Pryor's rock drives Supes to his knees, the material in Superman 3 is clearly the right stuff. Let the geologists have their fun, but this is OUR field and they are the amateurs here. Not that it matters (see above for sufficient reason), but the general awfulness of Superman Returns and the despicable way they just did a re-run of Superman (1), pretty much leave me cold about anyone associated with the movie having gotten anything about it right. They'd probably pee IN not OUT if that cock-up (sorry, how could I not drop that (as awful as their movie) pun???) were physically possible. In the world of real things, results matter. If tossing virgins into a volcano placates a god and the harvest returns, then that's… [cont.] Answered by roynburton - Thu Apr 26 19:23:16 2007 Chemistry Ionic/Covalent Bonding question?
Q. Can the lanthanoid series and actinoid series (last two rows on periodic table) be ionically bonded with non-metals? Asked by chanda - Wed Feb 18 20:36:44 2009 - - 1 Answers - 0 Comments A. Yes of course. they're metals, aren't they? Answered by Paul B - Wed Feb 18 20:47:58 2009 From Yahoo Answer Search: "lanthanoid" |
