For the problem presented, the correct Lewis structure for SrO is [Sr]^+2 + [O]^-2. I am hoping that this answer has
satisfied your query about this specific question. Also, if you have further
questions, please don’t hesitate to ask away.
The ionic compund Sro appers to be in group 2, it has a valence electrons and oxygen appears in group 16 with 16 electrons which means it can obtain 2 electrons to achieve a full valence shell. so the answer to your question is Sr^2 and Oxyge^-2
