NEET-XII-Physics
13: Nuclei
- #2The three stable isotopes of neon:
and
have respective abundances of 90.51%, 0.27% and 9.22%. The atomic masses of the three isotopes are 19.99 u, 20.99 u and 21.99 u, respectively. Obtain the average atomic mass of neon.
Ans : Atomic mass of
, m1= 19.99 u
Abundance of, η1 = 90.51%
Atomic mass of
, m2 = 20.99 u
Abundance of, η2 = 0.27%
Atomic mass of, m3 = 21.99 u
Abundance of, η3 = 9.22%
The average atomic mass of neon is given as:
