Problem: Write a nuclear equation for the indicated decay of each of the following nuclides. Express your answer as a nuclear equation.Ra−210 (alpha)Sn−126 (beta)Th−234 (beta)Mn−49 (positron emission)Ar−37 (electron capture)

🤓 Based on our data, we think this question is relevant for Professor Brummett's class at IOWA.

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We’re being asked to write a nuclear equation for the indicated decay of each nuclide.


Recall that in a nuclear reaction, the number of protons and neutrons is affected and the identity of the element changes


The different types of radioactive decay are:

• Alpha decay: forms an alpha particle (42α, atomic mass = 4, atomic number = 2)

• Beta decay: forms a beta particle (0–1β, atomic mass = 0, atomic number = –1). The beta particle appears in the product side.

• Gamma emission: forms a gamma particle (00γ, atomic mass = 0, atomic number = 0)

• Positron emission: forms a positron particle (01e, atomic mass = 0, atomic number = 1)

• Electron capture: the initial nuclide captures an electron (0–1e, atomic mass = 0, atomic number = –1). The electron appears in the reactant side.


The nuclear equation must be balanced with the same total atomic mass and atomic number on both sides.


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Problem Details

Write a nuclear equation for the indicated decay of each of the following nuclides. 

Express your answer as a nuclear equation.

Ra−210 (alpha)


Sn−126 (beta)


Th−234 (beta)


Mn−49 (positron emission)


Ar−37 (electron capture)

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