Chemical Elements - How They Were Discovered

D.N. Trifonov and V D. Trifonov CHEMICAL ELEMENTS HOW THEY WERE DISCOVERED Moscow Period* 3 M E N D E L E E V ' S B O F H 1 2 I A 4 Be 6.94 Lithium 9.01218 Beryllium 10.81 12 M g 13 A l 11 N a 22.98977 4i, 63 54 • Copper Rubidium 5s1 87.62 , 132.9054 Strontium 48 C d 49 I n H2.40 m M Cadmium Indium 79 A U Gold 87 F r 226.0254 6dW Radium * LANTHANIDES 5 8 C e 6 > ! 59 P r 60 N d 91 P a 7s2 92 U 231.0359 238.02 Protactinium Uranium 5.' 5p2 Hatnium 82 P b 121.7S |j Antimony 207.2 Lead 5di«.» 83 B i I «28p2 208.9804 J Bismuth | 104 K u [2611 122') sa.7,2 Kurchatovium Actinium 105 ff (NilStKH 61 P m 62 S m 63 E u 6 4 & so' 140.907 3 2 144.24 , , (145) 41*63 41 6s 4t 6® 4r' Praseodymium Neodymium Promethium ACTINIDES 90 T h 51 S b 72 H f 89 A C * * 88 R a (223J Francium H8.69 Lanthanum 20059 Mercury Thallium 4i Zirconium Tin | ,] 4| 9 , 2 2 57 L a * s o H g 81 T l Van! 33 A S J so S n 5..5P- 3034Sj 40 Z r 4dw 138.905s 196.9665 *' 88.9059 1 » 725 » *.24p' 74.9216 Germanium Arsenic Yttrium 137.34 6V _ . Barium Cesium , 39 Y w 4 7 9 0 32 G e Zinc Gallium 56 B a 55 C S Thorium Titanium 65.38 69.72 3d*°4»2 Silver 232.0381 Scandium 44.9559 J d, W * 15 P 30.9737 Phoaphorui 21 S c 30 Z n 31 G a 47 A g 140.12 Cerium Carbon 22 T i , , " 2s 2 2pJ 14.0067 ta Nitrogen 12.011 14 S i 38 S r 85.467s 7 2l' 2p' Boron 40.08 29 C U ' 7N e C Calcium Potassium M 06 s B 20 C a 37 R b 6 E L EM E N A Vl IV B A 24.305 26 98,54 3.'V 3i* 3s Magnesium Aluminium Silicon Sodium «. , B 1 39.09, 5 T HE III A B 3 Li 19 K 4 II A P E R I O D I C 151.96 , . 1S/J> 41. 6s2 Samarium GadoWi Europium 1504 9 3 N p 7 l ! 94 P U 12441 *»'3 237.0482 5l Plutonium Neptunium sr4 » 95 A m 9 6 C I 12431 12471 J Ameridum Curium > T A B L E 1 H - s 3 VI A B 1S999 2i>2p Oxygen 3P3 32.06 3 s ; 3p 4 Sulphur V 41 3d54s' ium 2sJJp, Fluorine lb s 1 364 4d 5s 18 A r ra •47, U V Ium 3iJ3p, Argon 26 F e M«4tJ Cobalt 44 R U 45 R h 46 P d Ruthenium Rhodium Palladium 77 lr 78 P t 43 T c 10107 4d'Ss' 102.9055 « » 5 » ° 98 9062 4d'5«' Technetium 5,J5(|1 Iodine 131.30 5 ,3 5p« Xenon 75 R e 84 P O 85 A t 106 107 76 O S