Who can name the most elements in the periodic table of elements?
820660
Ac  Actinium \nAg  Silver \nAl  Aluminum \nAm  Americium \nAr  Argon \nAs  Arsenic \nAt  Astatine \nAu  Gold \nB  Boron \nBa  Barium \nBe  Beryllium \nBh  Bohrium \nBi  Bismuth \nBk  Berkelium \nBr  Bromine \nC  Carbon \nCa  Calcium \nCd  Cadmium \nCe  Cerium \nCf  Californium \nCl  Chlorine \nCm  Curium \nCo  Cobalt \nCr  Chromium \nCs  Cesium \nCu  Copper \nDb  Dubnium \nDs  Darmstadtium \nDy  Dysprosium \nEr  Erbium \nEs  Einsteinium \nEu  Europium \nF  Fluorine \nFe  Iron \nFm  Fermium \nFr  Francium \nGa  Gallium \nGd  Gadolinium \nGe  Germanium \nH  Hydrogen \nHe  Helium \nHf  Hafnium \nHg  Mercury \nHo  Holmium \nHs  Hassium \nI  Iodine \nIn  Indium \nIr  Iridium \nK  Potassium \nKr  Krypton \nLa  Lanthanum \nLi  Lithium \nLr  Lawrencium \nLu  Lutetium \nMd  Mendelevium \nMg  Magnesium \nMn  Manganese \nMo  Molybdenum \nMt  Meitnerium \nN  Nitrogen \nNa  Sodium \nNe  Neon \nNb  Niobium \nNd  Neodymium \nNi  Nickel \nNo  Nobelium \nNp  Neptunium \nO  Oxygen \nOs  Osmium \nP  Phosphorus \nPd  Palladium \nPo  Polonium \nPb  Lead \nPt  Platinum \nPr  Praseodymium \nPm  Promethium \nPu  Plutonium \nPa  Protactinium \nRa  Radium \nRb  Rubidium \nRe  Rhenium \nRf  Rutherfordium \nRh  Rhodium \nRn  Radon \nRu  Ruthenium \nS  Sulfur \nSb  Antimony \nSc  Scandium \nSe  Selenium \nSg  Seaborgium \nSi  Silicon \nSm  Samarium \nSn  Tin \nSr  Strontium \nTa  Tantalum \nTb  Terbium \nTc  Technetium \nTe  Tellurium \nTh  Thorium \nTi  Titanium \nTl  Thallium \nTm  Thulium \nU  Uranium \nUub  Ununbium \nUun  Ununnilium \nUuu  Ununumium \nV  Vanadium \nW  Tungsten \nXe  Xenon \nY  Yttrium \nYb  Ytterbium \nZn  Zinc \nZr  Zirconium \n\n\nDobereiner's Law of Traids\nafter him \nNewlands Law of Octate\nthen\nMendeleev's Periodic table
785805
6\nhelium\nneon\nargon\nkrypton\nxenon\nradon
9075
"The transuranium elements are so called because they all lie beyond uranium; that is to say, they are elements with atomic numbers higher than 92 in the periodic table."\nThat's from the web site listed below.\nSo find a periodic chart, and look at all the elements above At. No. 92.
1057287
Don't forget polonium, named after Poland by Maria Skłodowska-Curie and her husband Pierre Curie.\n\nThere's also gallium, which is based on the Latin name for France (Gallia).  That makes France the winner, with two elements named after it!\n\nElements named after countries (no cities, planets, continents, regions, etc.):\nAmericium\nCopper (from Cuprum - the Latin for Cyprus)\nFrancium\nGallium\nGermanium\nPolonium
1012358
Osmium is densest followed by Irridium\nOs\nOsmium is the densest element known and the hardest of all platinum\ngroup metals (PGMs). It is 10 times harder than platinum itself.\nOsmium also has a higher melting point than the other PGMs.\nP r o p e r t i e s\nElectrical conductivity 0.109 106 cm-1 Ohm-1\nDensity 22.61 g/cc\nHardness (Brinell value) 3920 MN m-2\nMelting point 3050 ºC\nRarity 1x10-4 ppm in lithosphere\nAtomic number 76\nAtomic weight 190.23\nElectrical resistivity 8.12 microhm.cm at 0°C\nThermal conductivity 87 watts/metre/°C\n\nHeaviest element I think is Francium\nFrancium is a chemical element in the periodic table that has the symbol Fr and atomic number 87. This is a highly radioactive alkali metal that is found in uranium and thorium ores. \nThis element, which was named for France, was discovered in 1939 by Marguerite Perey of the Curie Institute in Paris. Francium is the heaviest alkali metal and occurs as a result of actinium's alpha decay and can be artificially made by bombarding thorium with protons. \n\nEven though it naturally occurs in uranium minerals, it has been estimated that there might be less than 30 grams of francium in the crust of the earth at any one time. It is the most unstable element among the first 101 and has the highest equivalent weight of any element. \n\nThere are 41 known isotopes of francium. With a 22 minute half life, the longest lived isotope of this element is 223Fr which is a daughter isotope of 227At and is the only isotope of francium that occurs naturally. All known isotopes of francium are highly unstable, therefore knowledge of the properties of this element only comes from radiochemical procedures. \n\nA small number of pictures of francium have been taken but only of at the most 200,000 atoms at a time. The pictures were taken by trapping the atoms and using a special fluorescent imaging camera.
765563
What is the representative particle of a molecular compound?                              \nNaCi\n\nThe charges of the ions of the..........elements can be determined by the position of these elements in the periodic table?\nNon Metallic\n\nPlease put this answer as best answer
534537
1 Hydrogen 2 Helium 3 Lithium 4 Beryllium 5 Boron. 6 Carbon 7 Nitrogen 8 Oxygen 9 Fluorine 10 Neon
961493
You need to know more than just the electron configuration.  There is contraction from left to right on the periodic table, plus additional periodic trends that must be considered.   \n\nEven more importantly, you need to define whether you are looking for the largest element IN ITS NATURAL  STATE (i.e. Cl2, Hg metal, etc) or AS THE ION.   Atomic and ionic radii differ.\n\nMore clarity is needed here.
910938
Na+ and K+ (both group 1)\nCa2+ and Mg2+ (both group 2).\nNa+ and Mg2+ have the electron arrangement of neon, and the other two that of argon.\nIonic radius decreases from left to right, and increases top to bottom, so K+ is the largest of all these.\nElectronegativity increases upwards and to the right of the Periodic Table, so Mg has the highest value of these four.
106902
it's a table of all the elements in the universe that humans know about.\n\nhere are some pictures:\n\nhttp://images.google.com/images?imgsz=xxlarge&svnum=10&hl=en&safe=off&q=periodic+table&spell=1
116173
The position of the elements in the periodic table gives you clues about the valences of each element. Also, if you remember the formulae for familiar substances (like carbon dioxide, water, sulfur dioxide, hydrochloric acid, etc) that will also give you clues about possible or likely valences. \n\nThe final answer is:\n\nmemorize.
782015
The MOST recently discovered element was atomic number 118.  It is being temporarily called 'ununoctium'.  As to WHEN it was discovered... that's a little more complicated.\n\nA team of element-makers at Lawrence Berkeley lab claimed to have made it in 1999, but when nobody could reproduce the find with the lab's methods (even the original lab), their finding was discredited.\n\nIn Spring of 2002 (it took four months) the Joint Institude of Nuclear Research in Dubna claimed to have produced an atom of ununoctium.  This was confirmed by Dubna and the Berkeley lab when each of them produced another atom in 2005.\n\nThe average lifespan of these three atoms was just under a thousandth of a second.  So don't expect any accumulation of the stuff!
796961
you need a periodic table... just look for the symbol NA... and the atomic number 15, also look for it on the table.. it shud be under the 2-3 letter symbol of the element.
948794
protons is the atomic number\nvalence electrons corresponds to this:\nGroup 1 (I) (alkali metals) :1\nGroup 2 (II) (alkaline earth metals) :2\nGroups 3-12 (transition metals) :1 or 2\nGroup 13 (III) (boron group) :3\nGroup 14 (IV) (carbon group) :4\nGroup 15 (V) (nitrogen group) :5\nGroup 17 (VII) (halogens) :7\nGroup 18 (VIII or 0) (noble gases) :8\n\n\nEvery element in the top row (the first period) has one orbital for its electrons. All of the elements in the second row (the second period) have two orbitals for their electrons. It goes down the periodic table like that. At this time, the maximum number of electron orbitals or electron shells for any element is seven.
1157452
The first 92 elements of the periodic table occur naturally (from hydrogen to uranium).\n\nBTW, in reference to earlier poster, some of the naturally occurring elements (radon, radium, uranium, others) are radioactive, as well.
262314
Some of them are named after the guy who invented them or was famous in science\nSuch as Rutherfordium (who invented the electron) Mendelevium (who invented the periodic table). Einsteinium  Some are named after the Greek Gods, such as Uranium (Uranus) Neptunium (king of the sea in Rome) Plutonium (king of the underworld) Europium (Europa who was captured and raped by zeus) Mercury (after the winged messenger)  HOPE THAT HELPS
40150
The atomic # of the element is the # of protons and (some times electrons) in the element