Radioactive decay follows first-order kinetic. The mean life and half-life of nuclear decay process are `tau = 1// lambda` and `t_(1//2) = 0.693//lambda`. Therefore are a number of radioactive elements in nature, their abundance is directly proportional to half life. The amount remaining after `n` half lives of radioactive elements can be calculated using the relation:
`N = N_(0) ((1)/(2))^(n)`
Which `"is"//"are"` true about the decay cosntant?

Options

A. Unit of `lambda` is `"time"^(-1)`
B. `lambda` is independent of temperature
C. `lambda` depends on the initial amount of element taken.
D. `lambda` depends on the nature of radioactive element.

Answer

A