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Complete the equation below, and specify whether it is a fission or fusion reaction.Mass Number:Atomic Number:Chemical Symbol:

Complete the equation below, and specify whether it is a fission or fusion reaction-example-1
User JoniJnm
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1 Answer

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First, we need to know the total number of mass on the left side. The mass number of H plus He is 5, so the mass number of X must be 1.

Second, the sum of the atomic numbers on the left is 3, so the atomic number of X is 1.

Therefore, the missing element must have a mass number of 1, and an atomic number of 1, its chemical symbol H. It's a fusion reaction because the atom of He is heavier.

User Andorov
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