Draw the Lewis structure of NCO (with minimized formal charges) and then choose the appropriate formal charges for each of the atoms. :Ô-C=N: A) N=0, C = 0, 0 = -1 B) N = -1, C=+1, 0 = -1 C) N=0, C = 0, 0 = 0 D) N=+1, C = -1,0 = -1 E) N = -1, C = 0, 0 = 0
Formal Charges
Formal charges have an important role in organic chemistry since this concept helps us to know whether an atom in a molecule is neutral/bears a positive or negative charge. Even if some molecules are neutral, the atoms within that molecule need not be neutral atoms.
Polarity Of Water
In simple chemical terms, polarity refers to the separation of charges in a chemical species leading into formation of two polar ends which are positively charged end and negatively charged end. Polarity in any molecule occurs due to the differences in the electronegativities of the bonded atoms. Water, as we all know has two hydrogen atoms bonded to an oxygen atom. As oxygen is more electronegative than hydrogen thus, there exists polarity in the bonds which is why water is known as a polar solvent.
Valence Bond Theory Vbt
Valence bond theory (VBT) in simple terms explains how individual atomic orbitals with an unpaired electron each, come close to each other and overlap to form a molecular orbital giving a covalent bond. It gives a quantum mechanical approach to the formation of covalent bonds with the help of wavefunctions using attractive and repulsive energies when two atoms are brought from infinity to their internuclear distance.
![**Title: Drawing the Lewis Structure of NCO⁻ Ion**
**Objective**: Learn how to draw the Lewis structure for the NCO⁻ ion, minimizing formal charges, and determine the appropriate formal charges for each atom in the molecule.
**Instructions**:
1. **Lewis Structure of NCO⁻ Ion**:
- The diagram shows the structure of the NCO⁻ ion.
- The structure is represented as:
- Oxygen (O) is double bonded to carbon (C).
- Carbon (C) is triple bonded to nitrogen (N).
- Lone pairs of electrons are shown as dots around the atoms.
2. **Explanation of Formal Charges**:
- The goal is to assign formal charges to each atom (nitrogen, carbon, and oxygen) that result in the most stable configuration.
3. **Options for Formal Charges**:
- Choose the set of formal charges that makes the overall charge match the ion, which is -1.
**Options**:
- A) N = 0, C = 0, O = -1
- B) N = -1, C = +1, O = -1
- C) N = 0, C = 0, O = 0
- D) N = +1, C = -1, O = -1
- E) N = -1, C = 0, O = 0
**Conclusion**:
- By choosing the correct set of formal charges based on the structure, you'll ensure the representation of the molecule is both stable and accurate. Analyze each option to see which distribution of formal charges logically fits the drawn Lewis structure and the molecular ion charge of -1.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4bb26d64-bb49-4ec5-afc7-ea9f4d31dfb0%2F0541db9a-c726-4446-a201-a0a140b8f472%2F5zon0y9_processed.jpeg&w=3840&q=75)
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