most penetrating radiation to least
Answer by Jamie Pattison. Confidence votes 15. The Least penetrating form of radiation is Alpha as it only travels 10cm in air and is stopped by paper. Alpha is also the most ionising, Beta is less ionising still and Gamma is the least ionising as photons carry no charge so they have less effect. The Least penetrating form of radiation is Alpha as it only travels 10cm in air and is stopped by paper.
CHM 1033 Class Assignment #7 Name ____________________. Module 7. 1. Rank alpha, beta, and gamma radiation in order of increasing penetrating ability.  Least penetrating is alpha, then beta, and gamma radiation is the most penetrating. 4. Complete the following nuclear equations.