A 0.479 g sample of a d-block element X X\,X is reacted completely with chlorine gas to form 1.899 g of the chloride XCl4XCl_4XCl4.
What is the element XXX?
Sc\text{Sc}Sc
Ti\text{Ti}Ti
V\text{V}V
Cr\text{Cr}Cr
199 exam-style questions on OCR A A Level Chemistry Atoms and reactions, covering Atomic structure and isotopes, Compounds, formulae and equations, Amount of substance, Acids, and Redox. Each one has a worked solution and a mark scheme showing where the marks go.