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[" 21.Enthalpy change for the reaction,"...

[" 21.Enthalpy change for the reaction,"],[4H_((g))rarr2H_(2(g))" is "-869.6kJ],[" The dissociation energy of "H-H" bond is "],[[" (a) "-434.8kJ," (b) "-869.6kJ],[" (c) "+434.8kJ," (d) "+217.4kJ]],[" (c) "+434.8kJ," (d) "+217.4kJ]

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