Thorium Th (Element 90) of Periodic Table
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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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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94 Pu Plutonium Appearance: Â Silvery white, Tarnishing to dark gray in air Mass number: Â 244 Atomic weight: Â 244.0642
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95 Am (Americium) Appearance – Silvery white, Shiny Mass number – 243 Atomic number (Z) – 95 Atomic
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96 Cm (Curium) Appearance – Silvery metallic, glows purple in the dark (It tarnishes rapidly in air) Mass
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97 Bk (Berkelium) Appearance – Silvery (Radioactive) Mass number – 247 Atomic weight – 247.0703 g/mol Atomic number
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98 Cf (Californium) Appearance – Silvery (Radioactive metal) Mass number – 251 Atomic weight – 251.0796 g/mol Atomic
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99 Es (Einsteinium) Appearance – Silvery; glows blue in the dark (Radioactive metal) Mass number – 252 Atomic
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100 Fm (Fermium) Mass number – 257 Atomic weight – 257.0951 g/mol Atomic number (Z) – 100 Electrons:
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101 Md (Mendelevium) Mass number – 258 Atomic weight – 258.0951 g/mol Atomic number (Z) – 101 Electrons:
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