Calculate the half life and mean life of radium 226 of activity 1c given mass of radium 226g
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1 Ci means 1 curie which is 3.7 * 1010 decays/sec.
The activity of radio active sample is said to be one curie, when 3.7 * 1010 decays take place in every second.
Rate of disintegration = -dN/dt = 3.7 1010 decays.
No of atoms of Ra 226 in 1 gram = N = Avagrado Number /226 = 6.025 * 1023 /226 = 2.6659 * 1021
Explanation:
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