<Dd> CS + 3 Cl → CCl + S Cl </Dd> <P> The production of carbon tetrachloride has steeply declined since the 1980s due to environmental concerns and the decreased demand for CFCs, which were derived from carbon tetrachloride . In 1992, production in the U.S. / Europe / Japan was estimated at 720,000 tonnes . </P> <P> In the carbon tetrachloride molecule, four chlorine atoms are positioned symmetrically as corners in a tetrahedral configuration joined to a central carbon atom by single covalent bonds . Because of this symmetrical geometry, CCl is non-polar . Methane gas has the same structure, making carbon tetrachloride a halomethane . As a solvent, it is well suited to dissolving other non-polar compounds, fats, and oils . It can also dissolve iodine . It is somewhat volatile, giving off vapors with a smell characteristic of other chlorinated solvents, somewhat similar to the tetrachloroethylene smell reminiscent of dry cleaners' shops . </P> <P> Solid tetrachloromethane has two polymorphs: crystalline II below − 47.5 ° C (225.6 K) and crystalline I above − 47.5 ° C. At − 47.3 ° C it has monoclinic crystal structure with space group C2 / c and lattice constants a = 20.3, b = 11.6, c = 19.9 (. 10 nm), β = 111 ° . </P>

How many atoms of chlorine (cl) are in the carbon tetrachloride molecule (ccl4)