**Question:**(10.8) Which of the following resonance forms of SCN⁻ contributes least to its correct structure? (Hint: Assign the formal charge for each atom in all resonance structures.)**Resonance Structures:**(a) \[ \text{[:S-C≡N:]}^- \] (b) \[ \text{[:S=C=N:]}^- \](c) \[ \text{[:S≡C-N:]}^- \]**Answer Options:**- $ \circ $ b- $ \circ $ a- $ \circ $ a and b- $ \circ $ c**Explanation:**To determine which resonance form contributes least to the correct structure of SCN⁻, it is beneficial to evaluate the formal charges assigned to each atom in the resonance structures.**Formal Charge Calculation:**- Formal Charge (FC) = [Valence electrons of the atom] - [Non-bonding electrons + 0.5(Bonding electrons)]For each resonance structure:(a) \[ \text{[:S-C≡N:]}^- \]- S (Sulfur): FC = 6 - [6 + 0.5(2)] = 6 - [7] = -1- C (Carbon): FC = 4 - [0 + 0.5(8)] = 4 - [4] = 0 - N (Nitrogen): FC = 5 - [2 + 0.5(6)] = 5 - [5] = 0 (b) \[ \text{[:S=C=N:]}^- \]- S (Sulfur): FC = 6 - [4 + 0.5(4)] = 6 - [6] = 0- C (Carbon): FC = 4 - [0 + 0.5(8)] = 4 - [4] = 0- N (Nitrogen): FC = 5 - [0 + 0.5(8)] = 5 - [4] = +1 (c) \[ \text{[:S≡C-N:]}^- \]- S (Sulfur): FC = 6 - [2 + 0.5(6)] = 6 - [5] = +1- C (Carbon

We have to select the structure that is least contributor to resonance

(10.8)Which of the following resonance forms of SCN contributes least to its correct structure? (Hint: Assign the form charge for each atom in all resonance structures.) Ob O a Oa and b Oc [:$C=N:] (a) [S=C=N]¯¯ (b) [:S=C_N:] (c)

(10.8)Which of the following resonance forms of SCN contributes least to its correct structure? (Hint: Assign the form charge for each atom in all resonance structures.) Ob O a Oa and b Oc [:$C=N:] (a) [S=C=N]¯¯ (b) [:S=C_N:] (c)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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