208Pb2+ name? protons? neutrons? electrons? and mass number?

3 Answers

  • Pb^2+ is the LEAD cation

    208 is isotopic mass number

    protons = 82

    neutrons = 208 – 82 = 126

    electrons = 80 ( Since it has ‘lost’ two electrons to be comes ‘Pb^2+’. )

  • Pb⁺² is properly named the lead(II) ion. It is also called the plumbous ion. It is one of the two lead ions. The other is lead(IV), Pb⁺⁴, called the plumbic ion.

  • lead +2 ion

    82 protons

    126 neutrons

    80 electrons

    mass number 208

    ——–

    All lead atoms and ions have 82 protons.

    Number of neutrons

    = mass number – number of protons

    = 208 – 82

    = 126

    Atoms are neutral, meaning they have the same number of protons and electrons. A lead atom has 82 protons and 82 electrons, but here we are talking about a lead 2+ ion. It has a positive charge of +2, meaning it has 2 fewer electrons than a lead atom, hence it has 80 electrons.

    In the notation 208Pb, the 208 is the mass number.

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