if you are asking about ICl4- ion then there are 28 valence electrons and 8 binding ones.total of 36 electrons
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The ICl4- ion has 36 valence electrons. Iodine contributes 7 valence electrons and each chlorine atom contributes 7 valence electrons, totaling 36 valence electrons in the ICl4- ion.
A magnesium atom has 2 electrons in its valence shell. A magnesium ion has 8 electrons in its valence shell.
Helium has two valence electrons. O6+ ion (a hypothetical ion) will also have 2 valence electrons.
Halides have 7 valence electrons, but the halide ion, haven gained an electron has 8 valence electrons
The hydrogen ion H+ is without electrons.
A hydrogen ion has zero valence electrons. Valence electrons are the electrons in the outermost shell of an atom, but since a hydrogen ion has lost its only electron, it does not have any valence electrons.