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Standard XII
Chemistry
Introduction to d and f Block Elements
The half life...
Question
The half life of radium is 1620 yr. and it's atomic weight is 266 kg per kilomol. The no. of atoms that will decay from it's 1g sample per second will be :
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Similar questions
Q.
The half-life of radium is
1620
years and its atomic weight is
226
. The number of atoms that will decay from its
1
g
sample per second will be
Q.
The half-life of radium is
1620
yr and the atomic weight is
226
kg per kilo mol. The number of atoms that will decay from its
1
g
sample per second will be (Take Avogadro's number
N
A
=
6.023
×
10
23
atom/kilo mol).
Q.
Half life of radium is
1620
years. How many radium nuclei decay in
5
hours in
5
g
m
radium? (Atomic weight of radium
=
223
)
.
Q.
1
milligram radium has
2.68
×
10
18
atoms. Its half life period is
1620
years. How many radium atoms will disintegrate from
1
milligram of pure radium in
3240
years?
Q.
The decay constant of radium is
4.28
×
10
−
4
per year. Its half life will be
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