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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is (a) 17 (b) 37 (c) 2 (d) 38

The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is (a) 17 (b) 37 (c) 2 (d) 38

The number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is (a) 17 (b) 37 (c) 2 (d) 38