Editable Periodic Table 1 H 2 He hydrogen

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Editable Periodic Table 1 H 2 He hydrogen 3 helium 4 5 6 7 8 9 10 Li Be B C N O F Ne lithium beryllium boron carbon nitrogen oxygen fluorine neon 11 12 13 14 15 16 17 18 Na Mg Al Si P S Cl Ar sodium magnesium aluminium silicon phosphorous sulphur chlorine argon 19 20 21 22 23 24 K Ca Sc Ti V potassium calcium scandium titanium vanadium 37 38 39 40 25 C 26 27 28 29 30 31 32 33 34 35 36 r chromium Fe Co Ni Cu Zn Ga Ge As Se Br Kr iron cobalt nickel copper zinc galium geramanium arsenic selenium bromine krypton 42 41 Mn manganese 43 44 45 46 47 48 49 50 51 52 53 54 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe rubidium strontium yttrium zirconium niobium molybdenum technetium ruthenium rhodium palladium silver cadminium indium tin antimoney tellurium iodine xenon 74 76 55 56 72 73 74 77 78 79 80 81 82 83 84 85 86 Cs Ba Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn caesium barium hafnium tantalum tungsten rhenium osminium iridium platinum gold mercury thallium lead bismuth polonium astatine radon 87 88 Fr Ra francium radium 57 58 59 La Ce Lanthanum cerium 89 90 60 61 62 63 64 65 66 67 68 69 70 71 91 Nd Pm Sm Eu Gd Tb Dy Ho Re Tm Yb Lu neodymium promethium samarium europium gadolinium terbium dysprosium holmium erbium thulium ytterbium lutetium 92 Pr praseodymium 93 94 95 96 97 98 99 100 101 102 103 Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr actinium thorium protactinium uranium neptunium plutonium americium curium berkelium californium einsteinium fermium mendelevium nobelium lawrencium Non metals Transitional metals Metalloids Halogens Alkaline Earth Rare Earth Other metals Nobel Gasses Alkali Metals Lanthanide Series (rare earth) Actinium Series (rare earth)

Chemical Symbol 12 6 C The full chemical symbol for an element shows its mass number at the top, and atomic number at the bottom. It tells us that a carbon atom has six protons. It will also have six electrons, because the number of protons and electrons in an atom is the same. The symbol also tells us that the total number of protons and neutrons in a carbon atom is 12. Note that you can work out the number of neutrons from the mass number and atomic number. In this example, it is 12 - 6 = 6 neutrons.

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