Home
Class 12
CHEMISTRY
Gadolinium-153, which is used to detect ...

Gadolinium-`153`, which is used to detect osteoporoiss, has a life of `242` days. After how many days, on an average, a nuclide can be conisdered absent form patient's system?

A

A. Infinity

B

`B. 350` days

C

`C. 242` days

D

`D. 4 xx 10^(-3)` days

Text Solution

Verified by Experts

The correct Answer is:
B
`t_(1//2) = 242` days
To find the disintegration of any radioactive element, average life time is being used.
So, `t_(av) = (1)/(k) = (t_(1//2))/(0.693) = 349.2 days ~~ 350 days`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    CENGAGE CHEMISTRY|Exercise Ex 4.3 More Than One Correct|5 Videos

  • CHEMICAL KINETICS

    CENGAGE CHEMISTRY|Exercise Ex4.4 Objective|10 Videos

  • CHEMICAL KINETICS

    CENGAGE CHEMISTRY|Exercise Ex 4.2 (Objective)|10 Videos

  • CARBOXYLIC ACIDS AND THEIR DERIVATIVES

    CENGAGE CHEMISTRY|Exercise Exercises Archives (Analytical And Descriptive)|34 Videos

  • COORDINATION COMPOUNDS

    CENGAGE CHEMISTRY|Exercise Archives Subjective|18 Videos

Similar Questions

Explore conceptually related problems

Gadolinium-153 is used in the detection of osteoporosis disease of bones. Half-life of gadolinium-153 is 500 days. After how many days, on an average, the nuclide can be considered absent from the body of patients ?

Gadolinum-153, which is used to detch osteoprosis, half a half-life of 242days. Which value is closet to the percentage of the Gd-153 left in a patient's system after 2 years (730days)?

The half-life of radon is 3.8 days. After how many days 19/20 of the sample will decay ?

Radon has 3.8 days as its half-life . After how many days 25% of a radon sample remains undecayed ?

The half life of radon is 3.8 days. After how many days will only one twentieth of radon sample be left over?

The half life of radon is 3.8 days . After how many days will only one twentieth of radon sample be left over ?

The half-life of pononium is 140 days. After how many days. 16 gm polonium will be reduced to 1 gm (or 15 gm will decay) ?

3.8 days is the half-life period of a sample. After how many days. The sample will become 1//8 th of the original substance ?

After how many days could a patient commonly feel malaria from the time of bitting of mosquito

30 persons can finish a job in20 days. After 6 days how many persons should leave the job, so that work is completedina total of 26 days?