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question_answer1) Which fundamental particles are not present in the normal hydrogen?
question_answer2) The valency of silicon is :
question_answer3) The number of neutron in an atom having atomic number 11 and mass number 23 is:
question_answer4) Isotopes of cobalt is used for treatment of which one of the following?
question_answer5) The maximum number of electron that can be accommodated in N shell of an atom is:
question_answer6) The isobar of \[^{6}{{C}_{14}}\] is:
question_answer7) The relative mass of electron is;
question_answer8) The absolute charge of proton is:
question_answer9) Who determined the magnitude of positive charge on the nucleus?
question_answer10) Who discovered nucleus of an atom?
question_answer11)
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