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Tritium, ""1^3H is a radioactive nucle...

Tritium, `""_1^3H` is a radioactive nucleus of hydrogen. It is used in luminous watch dials. Tritium decays by beta emission with a half-life of 12.3 years. What is the decay constant (in `s^(-1)` )? What is the activity (in Ci) of a sample containing `2.5 mug` of tritium? The atomic mass of tritium is 3.02 amu.

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`1.79 xx 10^(-9) // s , 0.024 Ci`
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