| Periodic Table By MASS NUMBER |
| O7----------07 LITHIUM 07 6.941 |
| Copyright 1993, 1997 2001 by Gerald E. Mowery |
| 39--------41 POTASSIUM 41 39.102 |
| 75-----------85 RUBIDIUM 85 85.700000 |
| 111-------133 CESIUM 133 132.905 |
| 147-139d* 169 NEWIUM 169d 171.040 |
| 183-175 * 231- 223 FRANCIUM 223d 223.019731 |
| O5-----05 HELIUM 5 4.0026 |
| O9-----------09 BERYLLIUM 09 9.0122 |
| 11-----------11 BORON 11 10.811 |
| 13------------13 CARBON 13 12.0107 |
| 15------------15 NITROGEN 15 14.00666 |
| 17-------------17 OXYGEN 17 15.9994 |
| 19------------19 FLUORINE 19 18.9984 |
| 21-S1 |
| 23-----------23 SODIUM 23 22.9898 |
| 25------------25 MAGNESIUM 25 24.312 |
| 27------------27 ALUMINUM 27 26.98153727 |
| 29------------29 SILICON 29 28.026 |
| 31------------31 PHOSPHORUS 31 30.9738 |
| 33-----------33 SULFUR 33 32.0640 |
| 35-------35-37 CHLORINE 37 35.453 |
| 37-----------39 ARGON 39 39.948 |
| 21-------------21 NEON 21 20.1830 |
| 41------------43 CALCIUM 43 40.070 |
| 77----------87 STRONTIUM 87 87.620 |
| 113--------135 BARIUM 135 137.3400 |
| 185-177 * 233 * 225 RADIUM 225d <<<225>>> |
| 79----------89 YTTRIUM 89 88.9059 |
| 43-----------45 SCANDIUM 45 44.95594 |
| 115----------137 LANTHANUM 137 138.9100 |
| 151-143d* 175 LUTETIUM 175d 174.9700 |
| 187-179 * 235-227 ACTINIUM 227d 227.02774700 |
| 45-------47-49 TITANIUM 47 47.867 |
| 81---------91 ZIRCONIUM 91 91.220 |
| 117---------139 CERIUM 139 140.12000 |
| 153-145d 177-179 HAFNIUM 179d 178.490 |
| 189-181* 237-229 THORIUM 229d 232.03583727 |
| 47---------51 VANADIUM 51 50.944 |
| 83-----------93 NIOBIUM 93 92.906378 |
| 119---------141 PRASEODYM- 141 140.907640 |
| 155-147d 181 TANTALUM 181d 180.948 |
| 191-183 * 239-231 PROTACTINIUM 231d 231.035878 |
| 49-----------53 CHROMIUM 53 51.996 |
| 85----------95 MOLYBDEN- 95 94.94000 |
| 121---143--145 NEODYMIUM 145 144.2400 |
| 157-149d * 183 TUNGSTEN 183d 183.8500 |
| 193-185 * 241-233 URANIUM 233d <<<233>>> |
| 51------------55 MANGANESE 55 54.938 |
| 87-----97--99 TECHNETIUM 99 98.906255 |
| 123--------147 PROMETHIUM 147 146.903 |
| 159-151d * 185/7 RHENIUM 197d 186.2000 |
| 195-187 * 243-235 NEPTUNIUM 235d 237.048167 |
| 53-----------57 IRON 57 55.848 |
| 89--------101 RUTHENIUM 101 101.9700 |
| 125--------149 SAMARIUM 149 150.35000 |
| 161-153d * 189 OSMIUM 189 190.2000 |
| 197-189 * 247-239 PLUTONIUM 239d <<<239>>> |
| 55------------59 COBALT 59 58.933 |
| 91---------103 RHODIUM 103 102.905504 |
| 127---------151 EUROPIUM 151 151.9600 |
| 163-155d*191/3 IRIDIUM 193d 192.200 |
| 199-191 * 249-241 AMERICIUM 241d 243.061372 |
| 57-----------61 NICKEL 61 58.710 |
| 93---------105 PALLADIUM 105 106.4000 |
| 129---------153 GADOLINIUM 153 157.2500 |
| 165-157d * 195 PLATINUM 195d 195.090 |
| 201-193 253-245 CURIUM 245d <<<245>>> |
| 59--------63-65 COPPER 65 63.546 |
| 95-----107-109 SILVER 109 107.86900 |
| 131---------155 TERBIUM 155 158.9247273 |
| 167-159d * 197 GOLD 197d 196.966953 |
| 203-195 * 255-247 BERKELIUM 247d 247.0703000 |
| 61-----------67 ZINC 67 65.370 |
| 97----111-113 CADMIUM 113 112.4000 |
| 133---------157 DYPROSIUM 157 162.5000 |
| 169-161d * 199/01 MERCURY 201 200.590 |
| 205-197 * 257-249 CALIFORNIUM 249 <<<249>>> |
| 63---------69-71 GALLIUM 71 69.72307553 |
| 99---------115 INDIUM 115 114.82000 |
| 135----------159 HOLMIUM 1-59 164.9300 |
| 171-163d * 203/5 THALLIUM 2 205d 204.3700 |
| 207-199 * 259-251 EINSTEINIUM 251d 253.084818 |
| 65-----------73 GERMANIUM 73 72.590 |
| 101-------117 TIN 117 118.590 |
| 137---------161 ERBIUM 161 167.2500 |
| 173-165df * 207 LEAD 207d 207.192737 |
| 209-201 * 263-255 FERMIUM 255d <<<255>>> |
| 67-----------75 ARSENIC 75 74.922 |
| 103---119-121 ANTIMONY 121 121.7500 |
| 139---------169 THULIUM 169 168.934 |
| 175-167d * 209 BISMUTH 209d 208.980 |
| 211-203 * 265-257 MENDELEVIUM 257d 257.095537278 |
| 69-----------77 SELENIUM 77 78.960 |
| 105---123-125 TELLURIUM 125 127.6000 |
| 141---------171 DUPLIUM 171 170.934 |
| 177-169d * 211 POLONIUM 211d 210.982 |
| 213-215 * 267-259 NOBELIUM 259d <<<259>>> |
| 71--------79-81 BROMINE 81 79. 90352259 |
| 107--------127 IODINE 127 126.9044468 |
| 143----------173 DISINE 173 172.934 |
| 179-171 * 213 ASTATINE 213 212.980387 |
| 215-217 269-261 LAWRENCIUM 261d 261.106918 |
| 73-----------83 KRYPTON 83 83.8000 |
| 109---129-131 XENON 131 131.300000 |
| 145---------175 NEWON 175 166.934 |
| 181-173 * 215 RADON 215 222.0757 |
| 217-219 271-263 M 263d <<<263>>> |
| 149-141d*173 YTTERBIUM 173d 173.040 |
| <Atomic Number- Mass Number <<<Element < MASS NUMBER <<<Atomic Mass |
| Legend |
|
| 21-S2 |
| CLICK NAME OF ELEMENT For paired configuration & components |