Question
Download Solution PDFWhich of the following is the correct Lewis structure of O3?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is d.
Key Points
- Each of the three oxygen atoms in an O3 molecule has six valence electrons. This totals 18 valence electrons for the molecule.
- In the central oxygen atom, two bonds are formed: one with each of the two other Oxygen atoms.
- It utilizes 4 out of 18 electrons, leaving us with 14 electrons.
- The rest of the 14 electrons are distributed as lone pairs. Each oxygen atom receives three lone pairs (2 electrons form a pair), which account for 6 x 3 = 18 electrons. This includes the electrons shared in the bonds.
- But for total 18 electrons, two electrons are needed from somewhere else.
- These electron pair is provided by another oxygen atom, forming a double bond between the central oxygen and one of the peripheral oxygen atoms.
So, the Lewis structure of O3 can be denoted as O-O=O, where "-" denotes a single bond containing 2 electrons and "=" denotes a double bond which contains 4 electrons. One oxygen forms a single bond with the central oxygen, while another forms a double bond. Each oxygen atom also has 6 electrons (or 3 pairs) forming lone pairs around them.
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