1.Bond enthalpies of H2\text{H}_2H2, X2\text{X}_2X2 and HX are in the ratio 2 : 1 : 2. If enthalpy of formation of HX is −50-50−50 kJ mol−1^{-1}−1, the bond enthalpy of X2\text{X}_2X2 isa.100 kJ mol−1^{-1}−1b.300 kJ mol−1^{-1}−1c.200 kJ mol−1^{-1}−1d.400 kJ mol−1^{-1}−1Login to continueOnly logged in users canattempt or see the solution.
