Bond dissociation enthaply of the first H-S bond in hydrogen sulphide is `376 "Kj"//"mole".` The enthalpies of formatin of `H_(2)S(g)and S(g) are-20.0and277.0 "kj"//"mole"` respectively. The enthalpy of formation of gaseous hydrogen atomis `218 "Kj"//"mole".` Using above information, answer following questions :
The bond disscociation enthalpy of the free radical HS is :
A. `138kJ//"mole"`
B. `276kJ//"mole"`
C. `357kJ//"mole"`
D. `376kJ//"mole"`
