Dilithium is crucial to the propulsion system of some starships. Dilithium is fomred by the adhesionof two lithium atoms in the gas phase: Li(g)+Li(g)toLi_(2)(g) The enthalpy of formation of dilithium is not easily measurable by direct means. However, th following thermochemicalparameters are known. DeltaH_(f)^(@) of Li_(g)=150kJ//mol IE of Li_(g)=5eV//"atom"[1eV//"atom"=100kJ//mol] BE of Li_((g))^(+)=130kJ//mol IE of Li_(2(g))=5eV//"molecule" [IE= ionisation energy] [BE= bond energy] Q. What is DeltaH_(f)^(@) of Li_(2(g))?

Dilithium is crucial to the propulsion system of some starships. Dilit

1.	Dilithium is crucial to the propulsion system of some starships. Dilithium is fomred by the adhesionof two lithium atoms in the gas phase: Li(g)+Li(g)toLi_(2)(g) The enthalpy of formation of dilithium is not easily measurable by direct means. However, th following thermochemicalparameters are known. DeltaH_(f)^(@) of Li_(g)=150kJ//mol IE of Li_(g)=5eV//"atom"[1eV//"atom"=100kJ//mol] BE of Li_((g))^(+)=130kJ//mol IE of Li_(2(g))=5eV//"molecule" [IE= ionisation energy] [BE= bond energy] Q. What is DeltaH_(f)^(@) of Li_(2(g))?
Answer» `130kJ//mol` `170kJ//mol` `270kJ//mol` `-270kJ//mol` ANSWER :A