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Standard IX
Chemistry
Radiocarbon Dating
200gms of a s...
Question
200
gms of a sample of Radioisotope has undergoes decay process. The amount of sample left over after III Half life period is.
A
25
g
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B
12.5
g
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C
100
g
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D
50
g
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Solution
The correct option is
A
25
g
A
200
g
m
s
→
1
s
t
h
a
l
f
l
i
f
e
100
g
m
s
→
2
n
d
h
a
l
f
l
i
f
e
50
g
m
s
→
3
r
d
h
a
l
f
l
i
f
e
25
g
m
s
25
g
m
s
of sample are left over after
3
r
d
half life period.
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