Question

Composition of the nuclei of two atomic species x and y are given below
Х
Y
Protons
8
8
Neutrons
8
10

Write the mass number of X and Y respectively.​

Answer 1

Answer:

Mass of X : 16u

Mass of Y : 18u

We know that mass of proton and neutron is almost equal and 1 proton or neutron is called 1u.