Problem: Radium-226 decays to radon-222 by emitting ____.

FREE Expert Solution

We’re being asked to determine the particle emission for the decay of Radium-226 to Radon-222.


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.

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Radium-226 decays to radon-222 by emitting ____.

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