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Ammonia (NH3) has 8 valence electrons. Nitrogen contributes 5 valence electrons and each hydrogen contributes 1 valence electron.
A molecule of ammonia (NH3) has 8 valence electrons - 5 from nitrogen and 1 each from the three hydrogen atoms.
Indium has 3 valence electrons.
Argon has 8 valence electrons.
There are 3 valence electrons in an atom of aluminium.
Xenon has 8 valence electrons.