Respuesta :

drpelezo

Answer:

9

Explanation:

#Valence electrons = ∑ valence electrons of each element

If working polyioins, add electrons to anions and subtract electrons from cations.

#Valence electrons in NO²⁺ = N + O - 2e⁻ = 5 + 6 - 2 = 9 valence e⁻

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