If half lives of a radioactive element, ...

If half lives of a radioactive element, undergoing parallel path `alpha-"decay"` and `alpha-"decay"` are 4 years and 12 years respectively, then percentage of element that remains after 12 years will be:

0.5

0.125

0.0625

0.25

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

CHEMICAL KINETICS
GRB PUBLICATION|Exercise Reasoning Type|14 Videos
CHEMICAL KINETICS
GRB PUBLICATION|Exercise Multiple Objective type|40 Videos
CHEMICAL KINETICS
GRB PUBLICATION|Exercise compllcatio in first order reactions|17 Videos
CHEMICAL BONDING-I
GRB PUBLICATION|Exercise Subjective Type|120 Videos
COORDINATION COMPOUNDS
GRB PUBLICATION|Exercise SBJECTIVE TYPE|98 Videos

Similar Questions

Explore conceptually related problems

If the half lives of a radioactive element for alpha and beta decay are 4 year and 12 years respectively, then the percentage of the element that remains after 12 year will be

The half line of a radioactive element is 2n year. The fraction decayed in n year.

99 % of a radioactive element will decay between

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

The number of nuclei of two radioactive substance is the same and their half-lives are 1 year and 2 years respectively. The ratio of their activities after 6 years will be

The half-life of cobalt-60 is 5.26 years. Calculate the percentage activity remaining after 4 years.

The mean lives of a radioactive material for alpha and beta radiations are 1620 and 520 years respectively . The material decays simultaneously for alpha and beta radiations. The time after which one fourth of the material remains undecayed in -

The half life period of a radioactive substance is 10 year. The amount of the substance decayed after 40 years would be

If 10% of a radioactive substance decays in every 5 year, then the percentage of the substance that will have decaed in 20 years will be .

GRB PUBLICATION-CHEMICAL KINETICS-Nuclear Chemistry

Carbon-14 radioactively decays via the emission of a beta particle. Wh...
Text Solution
|
80% of the radioactive nuclei are left undecayed in one day then % of ...
Text Solution
|
If half lives of a radioactive element, undergoing parallel path alpha...
Text Solution
|
A sample of rock from moon contains atoms of uranium and lead in the r...
Text Solution
|
If 50second are required to decay 2//3rd fraction of a radionactive sa...
Text Solution
|
The activity of a radioactive sample initially is 3200 dps and after ...
Text Solution
|
In the sequences of the following .(92)Xe^(238) overset(-alpha)to Y ...
Text Solution
|
.(13)^(27)Al is a stble isotope. .(13)^(29)Al is expected disintegrate...
Text Solution
|
Loss of a beta-"particle" is equivalent to:
Text Solution
|
Two radioactive material A(1) and A(2) and decay constant of 10lambda(...
Text Solution
|
Consider the following nuclear reactions : .(92)^(238)M to (Y)^(X)N+...
Text Solution
|
Helium nuclei combines to form an oxygen nucleus. The energy released ...
Text Solution
|
Read the following : (i) The half - life period of a radioactive ele...
Text Solution
|
Which of the following processes represents a gamma-decay only.
Text Solution
|
Let F(PP),F(Pn) and F("nn") denote the magnitude of net force by a pro...
Text Solution
|
The half-life of Tc^(99) is 6.0 hr. The delivery of a sample of Tc^(99...
Text Solution
|
A sample contains 0.1 gram-atom of radioactive isotope .(Z)^(A)(t(1//2...
Text Solution
|
The average (mean) life at a radio nuclide which decays by parallel pa...
Text Solution
|
A sample of .^(14)CO(2) was to be mixed with ordinary CO(2) for a biol...
Text Solution
|