If alpha, beta, and gamma radiation all carry the same energy, their penetrating

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1. If alpha, beta, and gamma radiation all carry the same energy, their penetrating power in a given medium, ranked from least to most, runs?

Alpha, then beta, then gamma

Beta, then gamma, then alpha

Alpha, then gamma, then beta

Beta, then alpha, then gamma

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Alpha particles penetrate least, easily stopped by skin or paper. Beta particles go further, needing a few millimetres of metal to stop. Gamma rays penetrate the deepest, needing thick lead or concrete.