In the first step of the reaction proposed in the passage, atomic oxygen is formed from carbon dioxide. Atomic oxygen is extremely reactive, and not found in any significant quantity on Earth's surface, because:A.it is a free radical.B.it has a low effective nuclear charge.C.it is a gas in its standard state.D.it has eight valence electrons.
Question
In the first step of the reaction proposed in the passage, atomic oxygen is formed from carbon dioxide. Atomic oxygen is extremely reactive, and not found in any significant quantity on Earth's surface, because:A.it is a free radical.B.it has a low effective nuclear charge.C.it is a gas in its standard state.D.it has eight valence electrons.
Solution
The reason atomic oxygen is not found in any significant quantity on Earth's surface is because it is extremely reactive. This is primarily due to the fact that it is a free radical. Free radicals are atoms, molecules, or ions that have unpaired valence electrons, which makes them highly chemically reactive. Therefore, the answer is A. it is a free radical.
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