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In any fission process, the ratio mass of fission products / mass of parent nucleus is

1. equal to 1
2. greater than 1
3. less than 1
4. depends on the mass of the parent nucleus

Correct answer: less than 1

Solution

In a fission process, a small amount of mass is converted into energy according to Einstein's mass-energy equivalence (E=mc²). Thus, the total mass of the fission products is slightly less than the mass of the parent nucleus.

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