JEE Main & Advanced Chemistry Hydrogen & Its Compounds Question Bank Hydrogen

  • question_answer The conversion of atomic hydrogen into ordinary hydrogen is

    A) Exothermic change

    B) Endothermic change

    C) Nuclear change

    D) Photochemical change

    Correct Answer: A

    Solution :

    \[2H\] ⇌ \[{{H}_{2}}\]; \[\Delta H=-104.5\,kcal\]  

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