1
You visited us
1
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard XII
Chemistry
Equivalent, Molar Conductivity and Cell Constant
After two hal...
Question
After two half lives, what fraction of a radioactive sample has decayed?
Open in App
Solution
Well, 3/4th of the original isotope has decayed.
Explanation:
After 1 half-life, clearly HALF of the original isotope remains.
And after TWO half-lives, a
A
0
4
remains.
Fraction decayed =
A
0
−
A
0
4
i.e. 3/4 of the original mass has decayed.
Suggest Corrections
0
Similar questions
Q.
The fraction of a radioactive sample that will decay during half of its half-life period, is,
Q.
The fraction of a radioactive sample will decay during half of its half-life period is
Q.
At time
t
=
0
, a radioactive sample has a mass of
10
g
. Calculate the expected mass of radioactive sample after two successive mean lives.
Q.
A radioactive sample disintegrates via two independent decay processes having half lives
T
(
1
)
1
2
and
T
(
2
)
1
2
respectively. The effective half - life,
T
1
2
of the nuclei is:
Q.
A radioactive sample decays through two different decay processes
α
−
d
e
c
a
y
and
β
−
d
e
c
a
y
. Half-life time for
α
−
d
e
c
a
y
is
3
h
and half-life time for
β
−
d
e
c
a
y
is
6
h
. What will be the ratio of number of initial radioactive nuclei to the number of radioactive nuclei present after
6
h
?
View More
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Related Videos
Equivalent, Molar Conductivity and Cell Constant
CHEMISTRY
Watch in App
Explore more
Equivalent, Molar Conductivity and Cell Constant
Standard XII Chemistry
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Solve
Textbooks
Question Papers
Install app