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The isotope thallium-208 (²⁰⁸₈₁Tl) is radioactive. It decays by β-decay to an isotope of lead (Pb).
Complete the equation for this decay.
²⁰⁸₈₁Tl → ...... Pb + ...... β (give the nucleon and proton numbers for the lead nucleus and the β-particle)
0625/41/M/J/24Cambridge IGCSE Physics 0625 · May/June 2024 · Paper 4 variant 1 · Question 8(a)(i)
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Suggested time: 5 min