TiCl
4 + O
2 TiO
2 + 2Cl
2.
Titanium(IV) must be used because chlorine take 1 valence electron to bond, and there is 4 valence electrons. so, Titanium has 4 valence electrons to give and chlorine has 1 valence electron to take per chlorine. I dont really know how to draw on here. but basically the titanium would have an electron on each side. And a chlorine attached to each electron with another electron drawn next to the one of the titanium to make an electron pair.