Naturally Occurring Neon Exists as Three Isotopes

question 93

Multiple Choice

Naturally occurring neon exists as three isotopes.90.51% is Ne-20 with a mass of 19.99 amu,0.27% is Ne-21 with a mass of 20.99 amu,and 9.22% is Ne-22 with a mass of 21.99 amu.What is the atomic mass of neon?

• A)10.00 amu
• B)20.18 amu
• C)20.99 amu
• D)62.97 amu

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