Calculate specific activity from half-life and molar mass, or find activity or mass for a radioactive isotope from the other values.
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Specific Activity Formula
The following formula is used to calculate a specific activity.
a = 1.32X10Âčⶠ/ (T1 / 2 * M)
- Where a is the specific activity (Bq/g)
- T1/2 is the half-life (years)
- M is the molar mass (g/mol)
Specific Activity Definition
Specific activity is a measure of activity per quantity of a radio nuclide. Activity is a measure of the number of radioactive transformations per second that occur.
Specific Activity Example
How to calculate specific activity?
- First, determine the half life.
Calculate the half-life of the nuclide. You can use the calculator linked above for more help on thin.
- Next, determine the molar mass.
Calculate or measure the molar mass in grams per mole.
- Finally, calculate the specific activity.
Calculate the specific activity using the formula above.
FAQ
What is a radio nuclide?
A radio nuclide is the nucleus of a radioactive material.
