SSC CGL 2022 PYQ — Question 32

The correct answer is option 4 i.e. 3.

• Lithium is the only stable light element which can produce net energy through fission.
• It's atomic number is 3 and melts at 180.5°C, boils 1330°C.
• It is the lightest metal and the least dense solid element (about half as dense as water).