Question

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.

Explanation:

these two atomic species x and y have same atomic numbers but different mass number,hence they are isotopes.