the following data represents the distribution of data of electron proton neutron in atom of four elements A,B,C,D a) give valency of element A b) the atomic number of element B C) the mass number of element D

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Answers 1

पी एक थे एन एच सी एक बी सीएम एक्स आरबीआई एस बीके एफसी एस बी

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