The chemical formulas for the oxides of potassium, calcium, gallium, and germanium are, respectively, K₂O, CaO, Ga₂O₃, and GeO₂. Refer to the periodic table and predict the chemical formula for each of the following compounds:

(a) Rubidium oxide

(b) Strontium oxide 

(c) Indium oxide 

(d) Lead oxide.

Periodic Table:

 

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2 3 4 15 6 7 3 11 Li 6.94 1 IA Na 22.99 19 37 R Rb 4 87 2 IIA Be 9.01 12 Fr (223) K Ca Sc 39.10 40.08 44.96 Mg 24.31 20 38 21 Sr Y 85.47 87.62 88.91 3 IIIB 88 39 55 56 La Cs Ba 132.91 137.33 138.91 57 89 Ra Ac (226) (227) Atomic number Symbol Atomic mass 4 IVB 22 Ti 47.88 40 Zr 2 91.22 72 5 VB 104 23 V 50.94 41 73 Hf Ta 178.49 180.95 105 Rf Db (261) (262) -H -1.01 6 VIB Nb Mo 92.91 95.95 90 24 Cr 52.00 42 74 106 Sg (263) 58 Pr Ce 140.12 140.91 91 59 7 VIIB Th Pa 232.04 (231) 25 W Re 183.85 186.21 Mn 54.94 43. Tc (99) 75 107 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) 10 VIII 11 IB 12 IIB 27 28 29 Zn Co Ni Cu 58.93 58.69 63.55 65.39 44 47 49 45 46 48 Ru Rh Pd Ag Cd In 101.07 102.91 106.42 107.87 112.41 114.82 77 78 80 79 Au Hg 196.97 200.59 111 112 Ir Pt 192.22 195.08 109 110 Hs Mt Ds Rg Cn (265) (266) (271) (272) (277) 108 30 5 13 ΠΙΑ B 10.81 13 6 14 IVA с 12.01 14 15 16 17 VA VIA VILA 7 N 14.01 15 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) 8 P 30.97 O 16.00 Al Si 31 34 53 26.98 28.09 32 33 Ga Ge As Se 69.72 72.63 74.92 78.97 50 51 52 Sn Sb Te I 118.71 121.75 127.60 126.90 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) 81 16 9 F 19.00 17 Cl 35.45 S 32.07 35 Br 79.90 68 69 70 Er Tm Yb 167.26 168.93 173.04 100 101 102 Cf Es Fm Md No (251) (252) (257) 98 (258) (259) 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)