Question

1.The number of neutrons in the neutrons in the neutrons of an atom can be calculated by _______ the atomic number of _______its mass number.

2.The isotopes of an element do not differ in the number of _______ but do differ in the number of _______.

3.The type of radiations, which are not deflected in presence of electric or magnetic field are termed as rays.

4.The penetrating power of B-rays is_______ times more than a-rays.

5.Synthetic elements are those which are prepared by _________.

6.The control rods in a nuclear reactor are made up of _________.

7._______ are stored in deep mines which are not in use.

8.When an elements emits B-particle, its mass number________.​

Answer 1

Answer:

The number is the atomic mass. Subtract the atomic number of the element from the atomic mass of the isotope, and the result is the number of neutrons in the nucleus of that isotope.