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19 August, 13:09

Which of the following atomic numbers represent an element that is radioactive on the periodic table.

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  1. 19 August, 16:40
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    Taking into account the atomic numbers (and not specific isotopes of each element) this list contains the radiactive elements ir order of atomic number.

    The atomic number is Z.

    Tecnecium, Tc : Z = 43

    Prometium, Pm: Z = 61

    P olonium, Po: Z = 84

    Astatine, At: Z = 85

    Radon, Rn: Z = 86

    Francium, Fr: Z = 87

    Radium, Ra: Z = 88

    Actinium Ac: Z = 89

    Thorium, Th: Z = 90

    Protactinium, Pa: Z = 91

    Uranium, U: Z = 92

    Neptunium, Np: Z = 93

    Plutonium, Pu: Z = 94

    Americium, Am: Z = 95

    Curium, Cm: Z = 96

    Berkelium, Bk: Z = 97

    Californium, Cf: Z = 98

    Einstenium, Es: Z = 99

    Fermium, Fm: Z = 100

    Mendelevium, Md: Z = 101

    Nobelium, No: Z = 102

    Lawrencium, Lr: Z = 103

    Rutherfordium, Rf: Z = 104

    Dubnium, Db: Z = 105

    Seaborgium, Sg: Z = 106

    Bhorium, Bh: Z = 107

    Hassium, Hs: Z = 108

    Meitnerium, Mt: Z = 109

    Darmstadium, Ds: Z = 110

    Roentgenium, Rg: Z = 111

    Copernicium, Cn: Z = 112

    Nihonium, Nh: Z = 113

    Flerovium, Fl: Z = 114

    Moscovium, Mc: Z = 115

    Livermorium, Lv: Z = 116

    Tennessine, Ts: Z = 117

    Oganesson, Og: Z = 118

    Remeber, other elements, although are not radiactive, do have radiactive isotopes.
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