Half life of a radio active element is `5 min`. `10 sec`. Time taken for `90%` of it to disintergrate is nearly

If half life of an radioactive element is 20min. Find the time interval of 33% decay and 67%

Half life period of a radio active element is 1500 years. Find the value of disintegration constant interms of second.

Half life period of a radio active element is 1500 years. Find the value of disintegration constant interms of second.

Half life period of a radio active element is 1500 years. Find the value of disintegration constant interms of second.

Half life period of a radio active element is 1500 years. Find the value of disintegration constant interms of second.

20% of a radio active element disintergrates in 1 hr. The percentage of the radio active element disintergrated in 2 hrs will be

Half-life period of a radioactive element is 100 seconds. Calculate the disintegration constant and average life. How much time will it take to lose its activity by 90% ?