Question

calculate a formal charge on an oxygen atom in h2o give examples of compounds with incomplete octate and expanded octate​

Answer 1

When this occurs, the atom of the element within the molecule is said to contain an incomplete octet. The common examples of such elements are hydrogen (stable with only 2 valence electrons), beryllium (stable with only 4 valence electrons) and boron and aluminum (stable with only 6 valence electrons).