The decay of a radionuclide with a half- life of 4.3 × 10⁵years has a rate constant (in yr^-¹) equal to
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Name: The decay of a radionuclide with a half- life of 4.3 × 10 5 years has a rate constant (in yr - 1 ) equal to )
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Question

The decay of a radionuclide with a half- life of 4.3 × 10⁵years has a rate constant (in yr^-¹) equal to )

Quizplus · Accepted Answer

The rate constant can be found using the equation: 
k = ln(2)/t1/2, where t1/2 is the half-life of the radionuclide. 
Plugging in the given half-life: 
k = ln(2)/(4.3 × 10^15) years = 1.6 × 10^-16 year^-1. 
Therefore, the correct choice is B.

The Decay of a Radionuclide with a Half- Life of 4.3