Question

Put the following oxygen isotopes in order of least (on top) to most (on bottom) by percent natural abundance

a. Oxygen-16
b. Oxygen-17
c. Oxygen-18
d. Oxygen-19

Answer 1

The order of least to most abundant oxygen isotopes by percent natural abundance is Oxygen-19, Oxygen-17, Oxygen-18, Oxygen-16. Therefore correct option is A

Step-by-step explanation:

The oxygen isotopes can be put in order from least to most abundant by percent natural abundance as follows:

1. Oxygen-19
2. Oxygen-17
3. Oxygen-18
4. Oxygen-16

According to the information given, the natural abundance of each isotope is as follows:

• Oxygen-16: 99.76%
• Oxygen-18: 0.20%
• Oxygen-17: 0.04%
• Oxygen-19: Not mentioned

Therefore, Oxygen-16 is the most abundant, followed by Oxygen-18, Oxygen-17, and Oxygen-19 has an unknown natural abundance.