Q. 13.2 The three stable isotopes of neon: and have respective abundances of , and . The atomic masses of the three isotopes are respectively. Obtain the average atomic mass of neon.
The atomic masses of the three isotopes are 19.99 u(m1), 20.99 u(m2) and 21.99u(m3)
Their respective abundances are 90.51%(p1), 0.27%(p2) and 9.22%(p3)
The average atomic mass of neon is 20.1771 u.
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