Transmutation equations are the result of radioactive decay processes, fission, and fusion reactions. To solve them, SUBTRACT what is given after the yield arrow to find the missing substance.

Example Alpha Decay Equation

example of alpha decay of Beryllium to helium


Interactive popup. Assistance may be required.

Check Your Answer

9 − 4 = 5

Be  He ?

4 − 2 = 2

Look up the Atomic number and you will find that "?" is He.

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Example Beta Decay Equation

example of beta decay of Thorium 234 to Protactinium 234

Interactive exercise. Assistance may be required. Complete the following transmutations. Check your answers by scrolling over each question mark.