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Questions and Answers
What is the fractional atomic mass of neon?
What is the fractional atomic mass of neon?
- 22.82 amu
- 21.26 amu
- 20.18 amu (correct)
- 20.92 amu
Which isotope of neon has the highest percentage in the sample?
Which isotope of neon has the highest percentage in the sample?
- 21 10Ne
- Isotopic percentages are not related to the mass of the isotopes
- 20 10Ne (correct)
- 22 10Ne
Why is the average atomic mass of neon considered to be 20.18 amu?
Why is the average atomic mass of neon considered to be 20.18 amu?
- It is an arbitrary value chosen for convenience in laboratory purposes (correct)
- Because all neon atoms in the sample have a mass of exactly 20.18 amu
- It is the sum of the individual atomic masses of the isotopes
- It is the mass of the most abundant isotope in the sample
What does the percentage given for each isotope represent?
What does the percentage given for each isotope represent?
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