Question

13. Composition of the nuclei of two atomic species X and Y are
given as under
X Y
Protons
6 6
Neutrons = 6 8​

Answer 1

Answer:

Mass number of X = Number of protons + Number of neutrons = 6 + 6 = 12. Mass number of Y = Number of protons + Number of neutrons = 6 + 8 = 14. These two atomic species X and Y have the same atomic number, but different mass numbers. Hence, they are isotopes.

Explanation:

460