Math

Question Which isotope of oxygen is not naturally occurring? {\{a. Oxygen-16, b. Oxygen-17, c. Ozone, d. Oxygen-15}\}

Studdy Solution

STEP 1

Assumptions
1. Isotopes of an element have the same number of protons but different numbers of neutrons.
2. The element Oxygen has an atomic number of 8, which means it has 8 protons.
3. The mass number of an isotope is the sum of the number of protons and neutrons in its nucleus.
4. Ozone is a molecule, not an isotope, and its chemical formula is O3O_3.

STEP 2

Determine the number of neutrons in each isotope by subtracting the atomic number from the mass number.
Neutrons=MassnumberAtomicnumberNeutrons = Mass\, number - Atomic\, number

STEP 3

Calculate the number of neutrons for Oxygen-16.
NeutronsO16=168=8Neutrons_{O-16} = 16 - 8 = 8

STEP 4

Calculate the number of neutrons for Oxygen-17.
NeutronsO17=178=9Neutrons_{O-17} = 17 - 8 = 9

STEP 5

Calculate the number of neutrons for Oxygen-15.
NeutronsO15=158=7Neutrons_{O-15} = 15 - 8 = 7

STEP 6

Since Ozone (O3O_3) is a molecule and not an isotope, it does not have a mass number that can be used to calculate the number of neutrons. Ozone is composed of three oxygen atoms bonded together and does not fit the definition of an isotope.

STEP 7

Identify the option that is not an isotope of Oxygen.
Option c, Ozone, is not an isotope of Oxygen because it is a molecule consisting of three oxygen atoms, not a variant of the oxygen atom with a different number of neutrons.
The answer is c. Ozone.

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