How do I know the amount of electrons in an element of the period table?

Try and say it as simply as you can, please.

1 Answer

  • 9 years ago
    Favorite Answer

    On a periodic table, each element has one number up and one down. The upper is the mass number/ relative atomic mass/nucleon number. The lower-the proton number/atomic number. The lower shows the number of protons which is the no of electrons

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