Discontinued Element Symbols

This is a list of element symbols and names that are placeholders for final names or else are no longer in use. This list does not include element symbols or names that remain in use regionally, such as aluminum/aluminium or iodine/jod. A - Argon (18) Current symbol is Ar. Ab - Alabamine (85) Discredited claim to discovery of astatine. Am - Alabamium (85) Discredited claim to discovery of astatine. An - Athenium (99) Proposed name for einsteinium. Ao - Ausonium (93) Discredited claim to discovery of neptunium. Az - Azote (7) Former name for nitrogen. Bv - Brevium (91) Former name for protactinium. Bz - Berzelium (59) Suggested name for praseodymium. Cb - Columbium (41) Former name of niobium. Cb - Columbium (95) Suggested name for americium. Cp - Cassiopeium (71) Former name for lutetium. Cp is the symbol for element 112, Copernicium Ct - Centurium (100) Proposed name for fermium. Ct - Celtium (72) Former name of hafnium. Da - Danubium (43) Suggested name for technetium. Db - Dubnium (104) Proposed name for rutherfordium. The symbol and name were used for element 105. Eb - Ekaboron (21) Name given by Mendeleev to an as of then undiscovered element. When discovered, scandium closely matched the prediction. El - Ekaaluminium (31) Name given by Mendeleev to an as of then undiscovered element. When discovered, gallium closely matched the prediction. Em - Emanation (86) Also called radium emanation, the name was originally given by Friedrich Ernst Dorn in 1900. In 1923, this element officially became radon (the name given at one time to 222Rn, an isotope identified in the decay chain of radium). Em - Ekamangan (43) Name given by Mendeleev to an as of then undiscovered element. When discovered, technetium closely matched the prediction. Es - Ekasilicon (32) Name given by Mendeleev to an as of then undiscovered element. When discovered, germanium closely matched the prediction. Es - Esperium (94) Discredited claim to discovery of plutonium. Fa - Francium (87) Current symbol is Fr. Fr - Florentium (61) Discredited claim to discovery of promethium. Gl - Glucinium (4) Former name of beryllium. Ha - Hahnium (105) Proposed name for dubnium. Ha - Hahnium (108) Proposed name for hassium. Il - Illinium (61) Discredited claim to discovery of promethium. Jg - Jargonium (72) Discredited claim to discovery of hafnium. Jo - Joliotium (105) Proposed name for dubnium. Ku - Kurchatovium (104) Proposed name for rutherfordium. Lw - Lawrencium (103) Current symbol is Lr. M - Muriaticum (17) Former name of chlorine. Ma - Masurium (43) Disputed claim to discovery of technetium. Md - Mendelevium (97) Proposed name for berkelium. The symbol and name were later used for element 101. Me - Mendelevium (68) Suggested name for erbium. Ms - Masrium (49) Discredited claim of discovery of indium. Mt - Meitnium (91) Suggested name for protactinium. Mv - Mendelevium (101) Current symbol is Md. Ng - Norwegium (72) Discredited claim to discovery of hafnium. Ni - Niton (86) Former name for radon. No - Norium (72) Discredited claim to discovery of hafnium. Ns - Nielsbohrium (105) Proposed name for dubnium. Ns - Nielsbohrium (107) Proposed name for bohrium. Nt - Niton (86) Suggested name for radon. Ny - Neoytterbium (70) Former name of ytterbium. Od - Odinium (62) Suggested name for samarium. Pc - Policium (110) Proposed name for darmstadtium. Pe - Pelopium (41) Former name for niobium. Po - Potassium (19) Current symbol is K. Rf - Rutherfordium (106) Proposed name for seaborgium. The symbol and name were instead used for element 104. Sa - Samarium (62) Current symbol is Sm. So - Sodium (11) Current symbol is Na. Sp - Spectrium (70) Suggested name for ytterbium. St - Antimony (51) Current symbol is Sb. Tn - Tungsten (74) Current symbol is W. Tu - Thulium (69) Current symbol is Tm. Tu - Tungsten (74) Current symbol is W. Ty - Tyrium (60) Suggested name for neodymium. Unb - Unnilbium (102) Temporary name given to nobelium until it was permanently named by IUPAC. Une - Unnilennium (109) Temporary name given to meitnerium until it was permanently named by IUPAC. Unh - Unnilhexium (106) Temporary name given to seaborgium until it was permanently named by IUPAC. Uno - Unniloctium (108) Temporary name given to hassium until it was permanently named by IUPAC. Unp - Unnilpentium (105) Temporary name given to dubnium until it was permanently named by IUPAC. Unq - Unnilquadium (104) Temporary name given to rutherfordium until it was permanently named by IUPAC. Uns - Unnilseptium (107) Temporary name given to bohrium until it was permanently named by IUPAC. Unt - Unniltrium (103) Temporary name given to lawrencium until it was permanently named by IUPAC. Unu - Unnilunium (101) Temporary name given to mendelevium until it was permanently named by IUPAC. Uub - Ununbium (112) Temporary name given to copernicium until it was permanently named by IUPAC. Uun - Ununnilium (110) Temporary name given to darmstadtium until it was permanently named by IUPAC. Uuu - Unununium (111) Temporary name given to roentgenium until it was permanently named by IUPAC. Vi - Virginium (87) Discredited claim to discovery of francium. Vm - Virginium (87) Discredited claim to discovery of francium. Yt - Yttrium (39) Current symbol is Y. Placeholder names basically express the atomic number of an element. These names are replaced by official names once the IUPAC verifies the element discovery and approves a new name and element symbol.

Coffee Is A Natural Habit For Any Italian Person - 885 Words

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IT failure and dependance Essay Example For Students

IT failure and dependance Essay In Todays Society we are so Dependent on I.T that the Consequences of its Failure May be Catastrophic. Discuss the Threats and Causes of Failure, and Steps Taken to Minimise it. In todays world it is impossible to run a large organisation without the aid of computers. Businesses hold massive amounts of important data, hospitals hold large amounts of confidential patient information and large scientific research projects hold important codes, formulae, and equations. The bottom line is that loss or corruption of this information is sure to result in bankruptcy, a substantial loss of customers, and even world-wide financial meltdown. A dependency on technology is impossible to avoid even with its fatal consequences. Companies face the worry of information lost through hacking, virus corruption, and even physical threats such as fire and flood. Viruses are the most common threat to companies they can corrupt large amounts of files and data both kinds of virus, biological and electronic, take over the host cell/program and clone their carrier genetic codes by instructing the hosts to make replicas of the viruses. Neither kind of virus, however, can replicate the mselves independently; they are pieces of code that attach themselves to other cells/programs,Just as biological viruses need a host cell, computer viruses require a host program to activate them. Once such example of the damage done by viruses occurred in 1988. A Cornell University hacker named Robert Morris used the national network system Internet, which include the Pentagons ARPAnet data exchange network. The nations high-tech ideologues and spin doctors have been locked in debate since, trying to make ethical and economic sense of the event. The virus rapidly infected an estimated six thousand computers around the USA This created a scare that crowned an open season of viral hysteria in the media, in the course of which, according to the Computer Virus Industry Association in Santa Clara, the number of known viruses jumped from seven to thirty during 1988, and from three thousand infections in the first two months of that year to thirty thousand in the last two months. While it caused little in the way of data damage (some richly inflated initial estimates reckoned up to $100m in down time), the ramifications of the Internet virus have helped to generate a moral panic that has all but transformed everyday computer culture.Other worrying viruses include Pathogen which was created by Christopher Pile. This fatal virus wiped data from a computers hard drive, in 1995 he was convicted under the Computer misuse attack. Stephen Fleming a BT employee gained access to a database that contained hundreds of top secret phone numbers and addresses of government installations. Police managed to catch him, and he was threatened to prosecution under the first category of the computer misuse act. Meanwhile BT tightened their security. One major bug that threatened to destroy all of our data was the Millennium bug. It pursued the media for months; it was difficult not to have heard of it. The problem was that many electrical items not just computers held a chip that kept track of the date, it was feared that after 1999 the date would switch to 0000 or 1900 and stop working all together. Millions of pounds were spent trying to outsmart the bug; no computers were sold in the years running up to 2000 without being millennium compliant. Fortunately the bug did not strike, and now many anti-virus companies are being accused of conning industries into buying new software to tackle a non-existent bug. Anti-virus packages are now one of the best selling types of software. Many companies offer bigger and better packages each year. Norton anti-virus software is one of the best selling packages along with Dr Solomons anti-virus toolkits. It is very sensible for every computer owner to have an anti-virus package. And it is vit al for any company to have an advanced anti-virus package. Data is also secured using a backup system. When processing information banks and businesses produce huge amounts of backup. Looking at the amount of backup created you may think that it is absurd. But for the business it secures information, any master data that is lost can just be brought up