You visited us 1 times! Enjoying our articles? Unlock Full Access!

Sub-Atomic Particles

The half-life...

Question

The half-life of $^{131} I$ is 8 days. Given a sample of $^{131} I$ at $t = 0$ , we can assert that:

n o n u c l e u s w i l l d e c a y a t t = 4 d a y s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

n o n u c l e u s w i l l d e c a y b e f o r e t = 8 d a y s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

a l l n u c l e u s w i l l d e c a y b e f o r e t = 16 d a y s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

a g i v e n n u c l e u s m a y d e c a y a t a n y t i m e a f t e r t = 0

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is C $a g i v e n n u c l e u s m a y d e c a y a t a n y t i m e a f t e r t = 0$
The decay of radioactive species takes place after $t = 0$ .
and afte 8 days remaing molecules of element is $N_{0} / 2$ .
and further in every half time, molecules become half.

Suggest Corrections

Similar questions

Q. The half-life of

^{131} I

8

days. Given a sample of

^{131} I

at time

t = 0

, we can assert that

Q. The half-life of

^{131} I

8

days. Given a sample of

^{131} I

at time

t = 0

Radioactive $^{131} I$ has a half-life of $8.0$ days. A sample containing $^{131} I$ has activity $20 μ C i$ at $t = 0$ .
(a) What is its activity at $t = 4.0$ days? (b) What is its decay constant at $t = 4.0$ days?

Q. A radioactive nucleus

A

with a half-life

T

, decays into a nucleus

B

. At

t = 0

, there is no nucleus

B

. At some time

t

, the ratio of the number of

B

to that of

A

0.3

. Then,

t

is given by:

Q. Radioactive ¹³¹I has a half-life of 8.0 days. A sample containing ¹³¹I has activity 20 µCi at t = 0. (a) What is its activity at t = 4 days? (b) What is its decay constant at t = 4.0 days?

Join BYJU'S Learning Program

The half-life of 131I is 8 days. Given a sample of 131I at t=0, we can assert that:

The correct option is C agivennucleusmaydecayatanytimeaftert=0The decay of radioactive species takes place after t=0.and afte 8 days remaing molecules of element is N0/2.and further in every half time, molecules become half.

The half-life of $^{131} I$ is 8 days. Given a sample of $^{131} I$ at $t = 0$ , we can assert that:

The correct option is C $a g i v e n n u c l e u s m a y d e c a y a t a n y t i m e a f t e r t = 0$
The decay of radioactive species takes place after $t = 0$ .
and afte 8 days remaing molecules of element is $N_{0} / 2$ .
and further in every half time, molecules become half.