Question

The Half-life period of Sr-90 is 20 years. Calculate its decay constant​

Answer 1

Answer:

0.03465

Explanation:

lambda=0.693/half life period

Answer 2

Explanation:

However, the half-life can be calculated from the decay constant as follows: half-life = ln (2) / (decay constant). To measure the decay constant, we take a sample of known mass and measure the number of radioactive decays per second as a function of