The third element in group nine is: I<span>ridium</span>
The answer is Oxygen. The<span> elements that has the same lewis structure as sulfur is Oxygen. </span><span>This is due to the fact that although the two compounds have different electronic configurations, the two have the same arrangement of electrons in their outermost orbits. </span>
The compound is Octane since it has 8 carbons on the parent chain and has only single carbon to carbon bonds.