Ch100: Fundamentals for Chemistry 1 Ch 5: Early Atomic Theory & Structure Section 1 1. Complete the following: a) The first observer of protons: b) First scientist to experimentally show the existence of electrons: c) This scientist proposed the “nuclear atom” hypothesis: d) This scientist discovered neutrons: 2. Distinguish between the mass number and the atomic number for a given element. 3. Distinguish between the mass number and the atomic mass for a given element. 4. Write out the (simple) representation for the formation of the following ions: a) Na+ : b) Mg2+ : c) Cl- : d) SO42- : 5. What are isotopes? 6. In what ways are isotopes of the same element similar & different? 7. Write out the representation for the following isotopes: a) Hydrogen (mass number = 2): b) Uranium (mass number = 236): c) Calcium (with 25 neutrons):Ch100: Fundamentals for Chemistry 2 Ch 5: Early Atomic Theory & Structure Section 2 Using the periodic table as a guide, fill out the following table: Symbol Name Atomic # Atomic Mass Mass # (of the most common isotope) # of Protons # of Neutrons # of Electrons H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Fe Ag Pt Au Hg PbCh100: Fundamentals for Chemistry 3 Ch 5: Early Atomic Theory & Structure The Periodic Table of Elements 1 18 1 1 H 1.008 2 13 14 15 16 17 2 He 4.003 2 3 Li 6.941 4 Be 9.012 5 B 10.81 6 C 12.01 7 N 14.01 8 O 16.00 9 F 19.00 10 Ne 20.18 3 11 Na 22.99 12 Mg 24.31 3 4 5 6 7 8 9 10 11 12 13 Al 26.98 14 Si 28.09 15 P 30.97 16 S 32.06 17 Cl 35.45 18 Ar 39.95 4 19 K 39.10 20 Ca 40.08 21 Sc 44.96 22 Ti 47.88 23 V 50.94 24 Cr 52.00 25 Mn 54.94 26 Fe 55.85 27 Co 58.93 28 Ni 58.70 29 Cu 63.55 30 Zn 65.38 31 Ga 69.72 32 Ge 72.59 33 As 74.92 34 Se 78.96 35 Br 79.90 36 Kr 83.80 5 37 Rb 85.47 38 Sr 87.62 39 Y 88.91 40 Zr 91.22 41 Nb 92.91 42 Mo 95.94 43 Tc (98) 44 Ru 101.1 45 Rh 102.9 46 Pd 106.4 47 Ag 107.9 48 Cd 112.4 49 In 114.8 50 Sn 118.7 51 Sb 121.8 52 Te 127.6 53 I 126.9 54 Xe 131.3 6 55 Cs 132.9 56 Ba 137.3 57 La 138.9 72 Hf 178.5 73 Ta 180.9 74 W 183.9 75 Re 186.2 76 Os 190.2 77 Ir 192.2 78 Pt 195.1 79 Au 197.0 80 Hg 200.6 81 Tl 204.4 82 Pb 207.2 83 Bi 209.0 84 Po (209) 85 At (210) 86 Rn (222) 7 87 Fr (223) 88 Ra 226.0 89 Ac 227.0 104 Rf (261) 105 Db (262) 106 Sg (263) 107 Bh (262) 108 Hs (265) 109 Mt (266) 110 Unn (269) 111 Uuu (272) 112 Uub (277) 113 114 Uuq (289) 115 116 Uuh (289) 117 118 Uuo (293) Lanthanides 58 Ce 140.1 59 Pr 140.9 60 Nd 144.2 61 Pm (145) 62 Sm 150.4 63 Eu 152.0 64 Gd 157.3 65 Tb 158.9 66 Dy 162.5 67 Ho 164.9 68 Er 167.3 69 Tm 168.9 70 Yb 173.0 71 Lu 175.0 Actinides 90 Th 232.0 91 Pa 231 92 U 238.0 93 Np 237.0 94 Pu (244) 95 Am (243) 96 Cm (247) 97 Bk (247) 98 Cf (251) 99 Es (252) 100 Fm (257) 101 Md (258) 102 No (259) 103 Lr
View Full Document
Unlocking...