Newton, Author at - Page 49 of 67

Platinum Pt (Element 78) of Periodic Table

78 Pt (Platinum) Pure Platinum is a malleable, ductile, lustrous, silvery-white metal. It has the 3rd highest density, […]

79 Au (Gold) Of all the elements, Apparence of pure gold (24 carat) is the most beautiful. It

80 Hg (Mercury) It is a heavy, silvery-white metal, and sometimes called it quicksilver. Mercury is the only

81 Tl (Thallium) Appearance: Silvery white Mass number: 204 Standard Atomic weight: 204.38 g/mol Atomic number (Z): 81

82 Pb (Lead) Appearance: Metallic gray Standard Atomic weight: 207.2 g/mol Mass number: 207 Atomic number (Z): 82

83 Bi (Bismuth) Appearance: lustrous brownish silver Mass number: 209 Standard atomic weight: 208.9804 g/mol Atomic number (Z):

84 Po (Polonium) Appearance: Silvery Allotropes: α-Po, β-Po Mass number: 209 Atomic weight: 208.9824 g/mol Atomic number (Z):

85 At (Astatine) Appearance: Unknown, (Probably metallic) Mass number: 210 Atomic weight: 209.9871 g/mol Atomic number (Z): 85

86 Rn (Radon) Appearance: Colorless gas, Occasionally glows green or red in discharge tubes Mass number: 222 Atomic

87 Fr (Francium) Appearance: An intensely radioactive metal. Mass number: 223 Atomic weight: 223.0197 g/mol Atomic number (Z):

88 Ra (Radium) Appearance: Soft, shiny, Silvery white metallic Mass number: 226 Atomic weight: 226.0254 g/mol Atomic number(Z):

89 Ac (Actinium) Appearance: Soft, Silvery-white, glows in the dark with a pale blue light because intense radioactivity