Find a pair of elements in the periodic table with atomic numbers less than 20 that are
Question:
Find a pair of elements in the periodic table with atomic numbers less than 20 that are an exception to the original periodic law.
Periodic Table:
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2 3 4 5 6 7 3 11 Li 6.94 Na 22.99 19 1 IA K 39.10 37 55 4 87 2 IIA Be 9.01 12 Mg 24.31 20 21 38 Rb Y Sr 85.47 87.62 88.91 3 IIIB Ca Sc 40.08 44.96 39 57 56 Cs La Ba 132.91 137.33 138.91 89 88 Fr Ac Ra (223) (226) (227) Atomic number Symbol Atomic mass- 4 IVB 22 Ti 47.88 40 Zr 91.22 72 5 VB 104 23 V 50.94 41 Nb 92.91 73 Hf Ta 178.49 180.95 105 Rf Db (261) (262) -1.01 90 6 VIB 24 Cr 52.00 42 Mo 95.95 74 58 Pr Ce 140.12 140.91 91 59 7 VIIB 25 Th Pa 232.04 (231) Mn 54.94 43. W Re 183.85 186.21 Tc (99) 106 107 Sg (263) 75 Bh (262) 60 Nd 144.24 92 U 238.03 8 VIII 26 Fe 55.85 76 Os 190.2 61 Pm (147) 93 Np 9 VIII (237) 27 10 VIII 44 45 46 Ru Rh Pd 101.07 102.91 106.42 107.87 Ag 77 78 Ir Pt 192.22 195.08 109 110 Mt Ds 108 Hs Cn (265) (266) (271) (272) (277) Rg 29 11 IB 28 Co Cu Zn Ni 58.93 58.69 63.55 65.39 47 12 IIB 111 30 80 79 Au Hg 196.97 200.59 112 5 13 ΠΙΑ B 10.81 13 6 14 IVA 98 с 12.01 14 66 67 62 63 64 65 Sm Eu Gd Tb Dy Ho 150.36 151.97 157.25 158.93 162.50 164.93 99 94 95 96 97 Pu Am Cm Bk (244) (243) (247) (247) 7 Cf Es (252) (251) 15 VA N 14.01 Al Si S 26.98 28.09 32 32.07 34 31 33 Br 79.90 48 Ge As Se 72.63 74.92 78.97 50 51 52 53 Sn Sb Te I 118.71 121.75 127.60 126.90 Ga 69.72 49 Cd In 112.41 114.82 81 82 83 84 85 TI Pb Bi Po At 204.38 207.2 208.98 (209) (210) 113 114 115 116 117 Nh Fl Mc Lv Ts (286) (285) (289) (293) (294) 15 P 30.97 16 17 VIA VIIA 68 8 O 16.00 16 9 F 19.00 17 Cl 35.45 35 167.26 100 Fm 69 70 Er Tm Yb 168.93 173.04 101 102 Md No (258) (259) (257) 18 VIIIA 2 He 4.00 10 Ne 20.18 18 Ar 39.95 36 Kr 83.80 54 Xe 131.29 86 Rn (222) 118 Og (294) 71 Lu 174.97 103 Lr (260)
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Related Book For
Introductory Chemistry Concepts And Critical Thinking
ISBN: 9780321804907
7th Edition
Authors: Charles Corwin
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