Question: how many total valence electrons are there in the lewis structure of h2po4 –?
Answer: In this Lewis structure of the hydronium ion, oxygen is sharing 3 of its valence electrons in covalent bonds with hydrogen and there is a single pair of unshared electrons. 3 + 2 = 5. Oxygen is in periodic table group VIA and has 6 valence electrons in its natural state.