Question

What is the total number of protons, neutrons, and electrons in a thallium, TI, atom that has a mass number of 204

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Answer 1

Name, Thallium. Symbol, Tl. Atomic Number, 81. Atomic Mass, 204.3833 atomic mass units. Number of Protons, 81. Number of Neutrons, 123. Number of Electrons, 81 ... It has a metallic luster when it is first exposed to air but it tarnish quickly

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