UPSC Combined Geo-Scientist, Mains · 2026 · Mains Paper I
Q8(c). Half-life of radium-226 from alpha emission
Question
Calculate the half-life period of radium-226, if 0.001 kg of it emits 3.7×10¹⁰ alpha particles per second.
Model answer
The free solution for 2026 answers the questions picked in its time plan. Question 8 is answered in full in the Book Edition of the 2026 solutions of Geo-Scientist Chemistry Paper I.
Coversradioactive decayHalf-life of radium-226 from alpha emission
All parts of Question 8
- 8(a) The [MCl₄]²⁻/[M(H₂O)₆]²⁺ equilibrium: identify M10 marks
- 8(b) Metal–metal bond order in dimeric organometallics10 marks
- 8(c) Half-life of radium-226 from alpha emission10 marks