1 H HYDROGEN 1.008 UNIQUE 2 H HELIUM 4.003 RARE GAS 3 L LITHIUM 6.939 METAL 4 B BERYLLIUM 9.012 METAL 5 B BORON 10.81 NONMETAL 6 C CARBON 12.01 NONMETAL 7 N NITROGEN 14.01 NONMETAL 8 O OXYGEN 16.00 NONMETAL 9 F FLUORINE 19.00 NONMETAL 10 N NEON 20.18 RARE GAS 11 N SODIUM 22.99 METAL 12 M MAGNESIUM 24.31 METAL 13 A ALUMINUM 26.98 METAL 14 S SILICON 28.09 NONMETAL 15 P PHOSPHORUS 30.97 NONMETAL 16 S SULFUR 32.06 NONMETAL 17 C CHLORINE 35.45 NONMETAL 18 A ARGON 39.95 RARE GAS 19 K POTASSIUM 39.10 METAL 20 C CALCIUM 40.08 METAL 21 S SCANDIUM 44.96 METAL 22 T TITANIUM 47.90 METAL 23 V VANADIUM 50.94 METAL 24 C CHROMIUM 52.00 METAL 25 M MANGANESE 54.94 METAL 26 F IRON 55.85 METAL 27 C COBALT 58.93 METAL 28 N NICKEL 58.71 METAL 29 C COPPER 63.54 METAL 30 Z ZINC 65.37 METAL 31 G GALLIUM 69.72 METAL 32 G GERMANIUM 72.59 METAL 33 A ARSENIC 74.92 NONMETAL 34 S SELENIUM 78.96 NONMETAL 35 B BROMINE 79.91 NONMETAL 36 K KRYPTON 83.80 RARE GAS 37 R RUBIDIUM 85.47 METAL 38 S STRONTIUM 87.62 METAL 39 Y YTTRIUM 88.90 METAL 40 Z ZIRCONIUM 91.22 METAL 41 N NIOBIUM 92.91 METAL 42 M MOLYBDENUM 95.94 METAL 43 T TECHNETIUM (99) METAL 44 R RUTHENIUM 101.1 METAL 45 R RHODIUM 102.9 METAL 46 P PALLADIUM 106.4 METAL 47 A SILVER 107.9 METAL 48 C CADMIUM 112.4 METAL 49 I INDIUM 114.8 METAL 50 S TIN 118.7 METAL 51 S ANTIMONY 121.8 METAL 52 T TELLURIUM 127.6 NONMETAL 53 I IODINE 126.9 NONMETAL 54 X XENON 131.3 RARE GAS 55 C CESIUM 132.9 METAL 56 B BARIUM 137.3 METAL 57 L LANTHANUM 138.9 METAL 58 C CERIUM 140.1 METAL 59 P PRASEODYMIUM 140.9 METAL 60 N NEODYMIUM 144.2 METAL 61 P PROMETHIUM (147) METAL 62 S SAMARIUM 150.4 METAL 63 E EUROPIUM 152.0 METAL 64 G GADOLINIUM 157.2 METAL 65 T TERBIUM 158.9 METAL 66 D DYSPROSIUM 162.5 METAL 67 H HOLMIUM 164.9 METAL 68 E ERBIUM 167.3 METAL 69 T THULIUM 168.9 METAL 70 Y YTTERBIUM 173.0 METAL 71 L LUTETIUM 175.0 METAL 72 H HAFNIUM 178.5 METAL 73 T TANTALUM 180.9 METAL 74 W TUNGSTEN 183.8 METAL 75 R RHENIUM 186.2 METAL 76 O OSMIUM 190.2 METAL 77 I IRIDIUM 192.2 METAL 78 P PLATINUM 195.1 METAL 79 A GOLD 197.0 METAL 80 H MERCURY 200.6 METAL 81 T THALLIUM 204.4 METAL 82 P LEAD 207.2 METAL 83 B BISMUTH 209.0 METAL 84 P POLONIUM (210) METAL 85 A ASTATINE (210) NONMETAL 86 R RADON (222) RARE GAS 87 F FRANCIUM (223) METAL 88 R RADIUM (226) METAL 89 A ACTINIUM (227) METAL 90 T THORIUM 232.0 METAL 91 P PROTACTINIUM (231) METAL 92 U URANIUM 238.0 METAL 93 N NEPTUNIUM (237) METAL 94 P PLUTONIUM (242) METAL 95 A AMERICIUM (243) METAL 96 C CURIUM (247) METAL 97 B BERKELIUM (247) METAL 98 C CALIFORNIUM (251) METAL 99 E EINSTEINIUM (254) METAL 100 F FERMIUM (257) METAL 101 M MENDELEVIUM (258) METAL 102 N NOBELIUM (255) METAL 103 L LAWRENCIUM (256) METAL