Radiology – MCQ 14 – Ionization potential

NEET PG Radiology
#1

Which one of the following has the maximum ionization potential?
A. Electron
B. Proton
C. Helium ion
D. Gamma ray

Correct answer :C. Helium ion

Alpha ray (helium ion) has the most ionization potential. Gamma ray has the most penetration power.