The mass numbers of four different elements A, B, C and D are 2, 35, 135 and 239 respectively. Which of them would provide the most suitable fuel for (i) nuclear fission, and (ii) nuclear fusion?

The mass numbers of four different elements A, B, C and D are 2, 35, 1

1.	The mass numbers of four different elements A, B, C and D are 2, 35, 135 and 239 respectively. Which of them would provide the most suitable fuel for (i) nuclear fission, and (ii) nuclear fusion?
Answer» (i) In the process of nuclear fussion, a very big atom (having a very big mass number) is used as a fuel. Here, out of the four elements A, B, C and D, the atom of element D is the biggest, having a mass number of 239. So, element D would provide the most suitable fuel for nuclear fission. (ii) In the process of nuclear fusion, a very small atom (having a very small mass number) is used as a fuel. Here, out of the four elements A, B, C and D, the atom of element A is the smallest, having a mass number of 2. So, element A would provide the most suitable fuel for nuclear fusion. Before we go further and discuss the consequences of using energy sources on the environment.