Photo AI
Which of the following is the Lewis electron dot formula for ozone? (A) :O::O: (B) :O: :O: (C) :O: O: :O: (D) :O: :O: - HSC - SSCE Chemistry - Question 6 - 2004 - Paper 1
Question 6
Which of the following is the Lewis electron dot formula for ozone? (A) :O::O: (B) :O: :O: (C) :O: O: :O: (D) :O: :O:
Worked Solution & Example Answer:Which of the following is the Lewis electron dot formula for ozone? (A) :O::O: (B) :O: :O: (C) :O: O: :O: (D) :O: :O: - HSC - SSCE Chemistry - Question 6 - 2004 - Paper 1
Step 1
Identify the correct Lewis structure for ozone
Answer
Ozone (O₃) is a molecule consisting of three oxygen atoms. To determine the correct Lewis dot structure, we need to consider the bonding and electron arrangements.
-
Count Valence Electrons: Each oxygen atom has 6 valence electrons, leading to a total of 18 valence electrons for the ozone molecule.
-
Draw the Core Structure: Considering the bonding, a reasonable structure is to have one double bond between two oxygen atoms and a single bond to the third, creating a resonance structure.
-
Distribute Electrons: After creating the core structure, place remaining electrons as lone pairs to satisfy the octet rule for each oxygen atom.
-
Review Options: Upon reviewing the options provided:
- (A) shows a double bond between two oxygens, which is plausible but not the typical resonance form.
- (B) depicts an incorrect number of bonds.
- (C) incorrectly represents the structure.
- (D) accurately shows the correct bonding and lone pairs arrangement.
Thus, the correct answer is (D) :O: :O:.