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Grade 12th pass9 grade science

13. Composition of the nuclei of two atomic species X and Y are given as under X-Y. Protons = 6-6 Neutrons = 6-8 Give the mass number of X and Y. What is the relation between the two species?

Profile image of Harshit Singh
5 Years agoGrade 12th pass
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1 Answer

Profile image of Pawan Prajapati
5 Years ago
Mass number of X : 6 + 6 = 12 Mass number of Y : 6 + 8 = 14 Since, the atomic numbers of both the species are the same, they are the same element. Also since they have different number of neutrons, their mass number is different and they are the isotopes.