Lewis dot structure and vesper shape for Hydronium?

First, it is a concept of (Valence Shell Electron Pair Repulsion Theory) .

Hydronium ion is ##color(red)([H_3O]^+)##.
So, here the central atom is Oxygen## (O)##.
Since, there is ##+ve## charge on the entire ion, so it is better to consider the ##+ve## charge to be on ##O## atom.
Now, ##color(red)(O^+)## has ##5## . Out of 5 electrons, 3 will be shared by the three ##H## atoms and other two electrons form one lone pair.
So, In total, there are ##color(blue)(3)## bond pairs and ##color(blue)(1)## lone pair on ##O## atom.
So, it’s distribution is TETRAHEDRAL , and the shape is Trigonal PYRAMIDAL in order to allow least possible repulsions.
So, lewis structure and shape of Hydronium ion is :Hope it Helps 🙂

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