Sir,
What is this H - H bond enthalpy in the chemical properties of hydrogen?
Kindly refer to the following link:
https://www.meritnation.com/ask-answer/question/how-hydrogen-is-made-inert-due-to-high-h-h-bond-enthalpy/hydrogen/8762867
https://www.meritnation.com/ask-answer/question/how-hydrogen-is-made-inert-due-to-high-h-h-bond-enthalpy/hydrogen/8762867