Neon | 360 | 20 | 19.9 Meta-Neon | 402 | 22.33 | —­ Sodium | 418 | 23.22 | 22.88 Magnesium | 432 | 24 | 24.18 Aluminium | 486 | 27 | 26.91 Silicon | 520 | 28.88 | 28.18 Phosphorus | 558 | 31 | 30.77 Sulphur | 576 | 32 | 31.82 Chlorine | 639 | 35.50 | 35.473 Potassium | 701 | 38.944 | 38.85 Argon | 714 | 39.66 | 39.60 Calcium | 720 | 40 | 39.74 Metargon | 756 | 42 | —­ Scandium | 792 | 44 | 43.78 Titanium | 864 | 48 | 47.74 Vanadium | 918 | 51 | 50.84 Chromium | 936 | 52 | 51.74 Manganese | 992 | 55.11 | 54.57 Iron | 1008 | 56 | 55.47 Cobalt | 1036 | 57.55 | 57.7 Nickel | 1064 | 59.ll | 58.30 Copper | 1139 | 63.277 | 63.12 Zinc | 1170 | 65 | 64.91 Gallium | 1260 | 70 | 69.50 Germanium | 1300 | 72.22 | 71.93 Arsenic | 1350 | 75 | 74.45 Selenium | 1422 | 79 | 78.58 Bromine | 1439 | 79.944 | 79.953 Krypton | 1464 | 81.33 | 81.20 Meta-Krypton | 1506 | 83.66 | —­ Rubidium | 1530 | 85 | 84.85 Strontium | 1568 | 87.11 | 86.95 Yttrium | 1606 | 89.22 | 88.34 Zirconium | 1624 | 90.22 | 89.85 Niobium | 1719 | 95.50 | 93.25 Molybdenum | 1746 | 97 | 95.26 Ruthenium | 1848 | 102.66 | 100.91 Rhodium | 1876 | 104.22 | 102.23 Palladium | 1904 | 105.77 | 105.74 Silver | 1945 | 108.055 | 107.93 Cadmium | 2016 | 112 | 111.60 Indium | 2052 | 114 | 114.05 Tin | 2124 | 118 | 118.10 Antimony | 2169 | 120.50 | 119.34 Tellurium | 2223 | 123.50 | 126.64 Iodine | 2287 | 127.055 | 126.01 Xenon | 2298 | 127.66 | 127.10 Meta-Xenon | 2340 | 130 | —­ Kalon | 3054 | 169.66 | —­ Meta-Kalon | 3096 | 172 | —­ Osmium | 3430 | 190.55 | 189.55 Iridium | 3458 | 192.11 | 191.56 Platinum A | 3486 | 193.66 | 193.34 Platinum B | 3514 | 195.22 | —­ Gold | 3546 | 197 | 195.74 -------------------------------------------- [Illustration:  PLATE II.  MALE (left) and FEMALE (right).]

As the words “ultimate physical atom” must frequently occur, it is necessary to state what we mean by the phrase.  Any gaseous chemical atom may be dissociated into less complicated bodies; these, again, into still less complicated; these, again, into yet still less complicated.  These will be dealt with presently.  After the third dissociation but one more is possible; the fourth dissociation gives the ultimate physical atom.[3] This may vanish from the physical plane, but it can undergo no further