How many valence electrons does Iodine have?

Valence electrons occupy the outermost shell or highest energy level of an atom while core electrons are those occupying the innermost shell or lowest energy levels. Iodine has seven valence electrons. Valence electrons of an atom are located in the outermost shell of the atom and participate in bonding. There are 7 valence shell electrons and 46 inner shell electrons in the ground state of iodine.

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