QQuestionChemistry
QuestionChemistry
Draw the Lewis structure for CHO^2 - on a piece of paper.
Note: CHO^2 - has resonance structures, and there are two forms of the drawn ion. Draw both structures.
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Answer
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Step 1: Identify the atoms and their valence electrons
The molecule CHO^2 - has the following atoms: carbon (C), oxygen (O), and hydrogen (H). The valence electron configurations for these atoms are as follows: - C: 2s² 2p², with 4 valence electrons - O: 2s² 2p⁴, with 6 valence electrons - H: 1s¹, with 1 valence electron Since there is a negative charge on the molecule, there is an extra electron that we should account for in the Lewis structure.
Step 2: Determine the formal charges for each atom
To find the formal charge for each atom, use the formula: Formal charge = (number of valence electrons in free atom) - (number of non-bonding electrons) - (number of bonding electrons / 2)
Final Answer
Calculate the formal charges for each atom. Form 1 Lewis structure: ``` H : O := C := O:
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