LucyLooney
Answered

After undergoing alpha decay, an atom of radium-226 becomes

Athorium-234
Curanium-238
Bradon-222
Dradium-224

Can someone give me an walk through

Verified Answer :

lulu1991

The answer is b. radon-222. The alpha decay means that it will emit an alpha particle when decays. The alpha particle has two protons and two neutrons. So Radium(88) minus two protons will become Radon(86). And the atomic mass will become 226-4=222.

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