The three stable isotopes of neon: 20 10 Ne, 21 10 Ne and 22 10 Ne, 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.

Question

Philoid · Accepted Answer

The atomic mass and abundance of ²⁰Ne₁₀ is m₁ = 19.99 u, n₁ = 90.51%

The atomic mass and abundance of ²¹Ne₁₀ is m₂ = 20.99 u, n₂ = 0.27%

The atomic mass and abundance of ²²Ne₁₀ is m₃ = 21.99 u, n₃ = 9.22%

Mass = =

Hence average atomic mass of Neon =

= u

= 20.1771 u

Average atomic mass of Neon = 20.1771u

The three stable isotopes of neon:2010Ne, 2110Ne and 2210Ne, 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.

The three stable isotopes of neon:
²⁰₁₀Ne, ²¹₁₀Ne and ²²₁₀Ne, 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.