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JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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How many neutrons are present in tritium nucleus?

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Correct option: A

2

Option A (2) is correct because tritium, being an isotope of hydrogen with a mass number of 3, has 1 proton and therefore 2 neutrons (3 - 1 = 2).

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1.25 \times {10^{ - 13}} \times {A^{1/3}}\mathrm{cm}.

. The atomic radius of atom is 1 Å. If the mass no. is 64, the fraction of the atomic volume that is occupied by nucleus is: