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CBSE XII
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Physics
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Nuclei
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Q)
The three stable isotopes of neon :
N
e
20
,
N
e
21
,
N
e
22
have respective abundances of
90
.51
%
,
0.27
%
and
9.22
%
. The atomic masses of three isotopes are
19.99
amu ,
20.99
a
m
u
and
21.99
a
m
u
Obtain the average atomic mass of neon .
19.45
a
m
u
19.54
a
m
u
20.45
a
m
u
20.54
a
m
u
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