Lead Pb (Element 82) of Periodic Table
82 Pb (Lead) Appearance:Â Metallic gray Standard Atomic weight: Â 207.2 g/mol Mass number:Â 207 Atomic number (Z):Â 82 […]
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82 Pb (Lead) Appearance:Â Metallic gray Standard Atomic weight: Â 207.2 g/mol Mass number:Â 207 Atomic number (Z):Â 82 […]
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83 Bi (Bismuth) Appearance:Â lustrous brownish silver Mass number:Â 209 Standard atomic weight:Â 208.9804 g/mol Atomic number (Z):Â
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84 Po (Polonium) Appearance: Silvery Allotropes: α-Po, β-Po Mass number: 209 Atomic weight: 208.9824 g/mol Atomic number (Z):Â
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85 At (Astatine) Appearance:Â Unknown, (Probably metallic) Mass number:Â 210 Atomic weight:Â 209.9871 g/mol Atomic number (Z):Â 85
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86 Rn (Radon) Appearance:Â Colorless gas, Occasionally glows green or red in discharge tubes Mass number:Â 222 Atomic
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87 Fr (Francium) Appearance:Â An intensely radioactive metal. Mass number:Â 223 Atomic weight:Â 223.0197 g/mol Atomic number (Z):Â
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88 Ra (Radium) Appearance:Â Soft, shiny, Silvery white metallic Mass number:Â 226 Atomic weight:Â 226.0254 g/mol Atomic number(Z):Â
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89 Ac (Actinium) Appearance:Â Soft, Silvery-white, glows in the dark with a pale blue light because intense radioactivity
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90 Th (Thorium) Appearance:Â Silvery, often with black tarnish Atomic weight:Â 232.0377 Atomic number (Z):Â 90 Electrons:Â 90
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91 Pa (Protactinium) Appearance:Â Bright, Silvery metallic luster Mass number: 231 Atomic weight:Â 231.03588(2) g/mol Atomic number (Z):Â
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92 U Uranium Appearance:Â Silvery gray metallic Mass number:Â 238 Atomic weight: Â 238.02891 g/mol Atomic number (Z): Â 92
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92 Np Neptunium Appearance:Â Silvery metallic Mass number: 237 Atomic weigth:Â 237.0482 g/mol Atomic number (Z):Â 93 Electrons:
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