JAMB Chemistry 2023 Objective — Question 40

Question 40 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2023 Objective paper, with the correct answer and a full explanation.

The radioactive emission with the least ionisation power is

A. α-particles
B. γ-rays (least ionisation)Correct
C. β-particles
D. X-rays

Explanation

Ionising power order: α > β > γ. Gamma rays have the least ionising power but greatest penetrating power. Alpha particles have the highest ionising power.

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