Group Periodic Table of the Elements 18 1 1.01 tydrogen Не 4.00 2 13 14 15 16 17 9 Li 16 B 10 Ne Ве N 18.00 Funime 6.94 9.01 Beryu 10.81 12.11 14.01 Nitrogen 15.99 Cygen 20. 18 Noon Lihum Bomn Cortan 12 Mg 24.31 Mognesu 11 Na 15 16 17 18 Ar 13 14 Al Si 35.45 22.90 Sociun 26.90 A am 28.00 30.97 32.07 3 Phehone 39.95 Prgan 4 22 Ti 6 7 10 11 12 Chiorine Sutur 20 K 39 00 19 21 Sc 25 Mn 54.94 Mang 30 Zn 31 32 Ga Ge 33 As 34 Se 36 23 V 50.94 24 Cr 5199 Cheren 26 Fe 27 28 Ni 29 Cu 35 Br 79.90 Ca Co Kr 83 79 40,00 44.96 47 87 55 85 58.93 5869 69.55 Capper 6541 69.72 7264 Gar n 74.92 7896 Patsm Ccm Scandars Tanm Vckam Cab Nick Glun Aser Selesen 37 38 40 Zr 42 43 Mo 96.94 44 Tc Ru 46 47 Pd 48 Ag 49 50 Sn 51 52 Sb 39 41 45 53 54 Xe 5 Rb Sr Nb Rh Cd In Te 05.47 87.02 88.91 91.22 92.91 1011 102.9 100.4 107.9 112,4 114.0 118.7 121.8 127.6 120.9 131.3 RuAm Saum Nom Plalu C am Inam Tuurun Xann 56 57-71 Ва 55 73 74 75 Re 76 77 Os 1902 Onum 78 79 80 Au Hg 81 82 83 84 Po [209) 72 85 86 6 Cs La- Hf Ta W Ir Pt TI Pb Bi At Rn 2221 lorzl 117 Uus 1294 2006 132.9 Cestun 137.3 Ba 1785 180.9 1838 186.2 192.2 195 1 Pim 196.9 204.4 2072 208.9 Lu Tng Rhenium Coid Merary Than Bnth Prinam Atatne 87 Fr 88 Ra [226 89-103 104 Ac- Lr 106 107 Bh 1264 108 Hs [277) Hum 111 Rg 1272) Materun Damtactir Roerigerum Copermcum Unurern 109 Mt 1268) 110 Ds [269) 113 Uut [284] 114 FI [289) Flarovarn unurponium Umerum Lnunpium Unuocun 115 116 Uup [280 118 105 Db 1262] 112 Cn [285) Lv [293) Rf 7 [223 Francin (261) **Rtierra Sg (266) seeorgum Uuo [294] Fadurs Botrum 69 57 La 58 59 Ce 60 Pr 61 Nd Pm 62 Sm 63 64 Eu 65 66 Tb 1589 67 Dy Но 68 70 71 Yb 173.1 Y m Gd 1573 Er Lu (145) Tm 160.9 162.5 Oyprosn 138.9 140.1 140.9 144.2 150.4 1519 164.9 167.3 174.9 Lartanum Caran Praseceterar eceyrmm Prametiun Saum Epum Hor Tertum Esum Thun 93 Np 91 92 Pa 96 96 Am Cm [243) 1247) 97 98 99 89 Ac 12271 90 Th 232.0 Thorn 94 Pu 1244| 100 Fm 1257) 101 Md 1250) 102 No 1259 103 Lr [262) Bk Cf Es 2310 Frotactn n 230.0 Lum 12471 k 1251) Cienm inim [252) Nacunm Laurnaum ACEnium Color Code Atomic 1 | Other non-metals Alkali metals | Transition metals | Other metals | Alkaline earth metals | Halogens | Noble gases Number Symbol Lanthanides 1.01 Hydrogen Relative Actinides Atomic Mass Unknown chemical properties Name Figure 2.3 Arranged in columns and rows based on the characteristics of the elements, the periodic table provides key information about the elements and how they might interact with each other to form molecules. Most periodic tables provide a key or legend to the information they contain. How many neutrons do (K) potassium-39 and potassium-40 have, respectively? 3, 4.