JAMB Chemistry 2017 Objective — Question 36

Question 36 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2017 Objective paper, with the correct answer and a full explanation.

Phosphorus-32 decays as a β-emitter to produce

A. A. ³²₁₆S
B. B. ²⁴₁₁Al
C. C. ³²₁₆S (with a beta particle emitted)Correct
D. D. ³⁵₁₇Cl

Explanation

³²₁₅P → ³²₁₆S + ⁰₋₁e: beta decay converts a neutron to a proton, increasing the atomic number by 1 while mass number stays the same, giving sulphur-32.

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