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Mentoeceev’s Hewoic “Tague, , &“ The properties of ements are peviodic function 0] theta atomic mass”, , “AL this time, 63 cluments wee known., , ‘He sorted ut the elements with similar propectia and pinned the cards togeiner, on a wall., , . Among Cheerical propos (endeléev, with oxygen and hnyclvogen ., , "He selected hydregen and oxygen as they one very Yeactive and jourred compound with, , Conentvated on the compounds formed by Clemente, , most elements., , Cr) Fi bi mw hd v A |, Oxide RO RO RO, RO, RO, RO, RO, RO,, Hydride RH RH, RH, RH, RH, RH, RH, Periods A BA B A BA BA BA BA _ B ‘Transition, series, H, t 1,008, : i Be B c N oO F, 6.939 9.012 10.81 12.011 14,007 15,999 ——-18.998, 3 Na Mg Al si P s cl, 2299 24.31 29.98 28.09 30.974 32.06 35.453, 4 First K Ca Se TL v Cr Mn Fe Co Ni, series; 39.102 40.08 4496 47.90 50.94 50.20 54.94 55.85 58.93 58.71, Second cu Zn Ga Ge As Se Br, serles: 63.54 65.37 69.72 72.59 74.92 78.96 79.909, 5 First Rb Sr Y Zr Nb Mo Te Ru Rh Pd, series: 85.47 87.62 88.91 91.22 92.91 95.94 99 101.07 102.91 106.4, Second Ag Cd In Sn Sb Te I, series: 107.87 11240 114.82 118.69 121.75 127.60 ~—-126,90, 6First Cs Ba La Hf Ta Ww Os ir Pt, series: 132.90 137.34 138.91 17849 180.95 183.85 190.2 192.2 195.09, Second Au a Pb Bi, series: 196.97 200.59 204.37 207.19 - 208.98, , Maevits, , y In his, , pettodic table he (ft some blank Spaces., , ~ Thee vacant Spaces wee (opt fpr including Cements that weu net discovered, , at thot time., , 2 Mendeleev could also predict the popula of thue, , unknown = dements, on the, , basis 5 the propecia of the olements lying adjatenk to these Vacant Spaces.