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Valence electrons are the electrons from the outermost shell of the atom. Number of valence electrons in an atom = the group number of that atom Valence electrons of a moleucle = sum of the valence electrons of all the atoms in that molecule. The molecule HCl has 1 hydrogen (group number =1) and 1 chlorine atom (group number =7). The total number of valence electrons in HCl = 1(1) + 1(7) = 8 Pushpa Padmanabhan Lansing Community College

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15y ago
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13y ago

The chloride ion (Cl-) has eight valence electrons.

The element chlorine has seven.

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12y ago

It has 11 electrons

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12y ago

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Q: How many electrons does hydrochloric acid have?
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