Which of the followings is not a right isotope of Hydrogen? A Hydrogen-7 B Protium C Deuterium D None of these Which of the followings is not a right isotope of Hydrogen? Correct Answer Hydrogen-7 Bissoy MCQ Team Jun 03, 2023 সাধারণ জ্ঞান B ইউনিট খুলনা বিশ্ববিদ্যালয়