Question

Question #06bb1

Answer 1

100

Explanation:

The atomic mass of an element can be thought of as the number of protons + the number of neutrons. The atomic number of an element equals the amount of protons it has. Using this, we see that the number of neutrons can be calculated by subtracting the atomic number from the atomic mass. In this case, we get `153-53=100`.

Answer 2

1. Sure to be very unstable !

Explanation:

Number of neutrons + number of protons (atomic number) = mass number
so 100 + 53 = 153