Chemistry The Ionization energy of Hydrogen is __________? Options:A. 10.54evB. 12.54evC. 13.6evD. 17.56evView AnswerC. 13.6ev Continue Reading Previous: Water Gas is a mixture of two gases Hydrogen & Carbon monoxide, while separating Hydrogen gas by liquification process which one is liquefied first__?Next: Which of the following is more acidic in nature?