Question

The half-life of radium is 1600 years. What is the mean life and disintegration constant of radium?

• A. 2309, $\frac{1}{2309}$ per year
• B. 3309, $\frac{1}{3309}$ per year
• C. 1309, $\frac{1}{1309}$per year
• D. None of these

Answer 1

Answer: (A)

2309, $\frac{1}{2309}$ per year

Answer 2

l = and t = $\frac { 1 } { \lambda }$