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gamma is most penetrating and has highest energy. It is a form of electromagnetic radiation. Alpha is least penetrating and is made of a He nucleus (2 protons and 2 neutrons). Beta is medium penetration and consists of high-speed electrons.

2007-01-28 13:05:25 · answer #1 · answered by physandchemteach 7 · 0 0

gamma ray

2007-01-28 21:03:01 · answer #2 · answered by anonymous 2 · 0 0

gamma

2007-01-28 21:02:06 · answer #3 · answered by ecolink 7 · 0 0

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