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Current Question (ID: 21292)

Question:

$\text{Which of the following compounds are aromatic?}$

Options:

1. $\text{Only A and B}$
2. $\text{Only A and C}$
3. $\text{Only B and C}$
4. $\text{A, C, and D}$

Solution:

$\text{Hint: Follow the conditions of aromaticity.}$ $\text{Explanation:}$ $\text{When deciding if a compound is aromatic, go through the following checklist. If the compound does not meet all the following criteria, it is likely not aromatic.}$ $1. \text{The molecule is cyclic (a ring of atoms)}$ $2. \text{The molecule is planar (all atoms in the molecule lie in the same plane)}$ $3. \text{The molecule is fully conjugated (p orbitals at every atom in the ring)}$ $4. \text{The molecule has } 4n+2 \pi \text{ electrons (n=0 or any positive integer)}$ $\text{Among the given compounds, A and C are aromatic because both have } sp^2 \text{ hybridized carbon atoms and } 6\pi \text{ electrons are present.}$ $\text{Compound B is not aromatic because of } sp^3 \text{ hybridized carbon atoms.}$ $\text{Also, compound D is antiaromatic because } 8\pi \text{ electrons are present in it.}$ $\text{Thus, option 2 is the correct answer.}$

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Upload a JSON file containing LaTeX/MathJax formatted question, options, and solution.

Expected JSON Format:

{
  "question": "The mass of carbon present in 0.5 mole of $\\mathrm{K}_4[\\mathrm{Fe(CN)}_6]$ is:",
  "options": [
    {
      "id": 1,
      "text": "1.8 g"
    },
    {
      "id": 2,
      "text": "18 g"
    },
    {
      "id": 3,
      "text": "3.6 g"
    },
    {
      "id": 4,
      "text": "36 g"
    }
  ],
  "solution": "\\begin{align}\n&\\text{Hint: Mole concept}\\\\\n&1 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\text{ moles of carbon atom}\\\\\n&0.5 \\text{ mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6] = 6 \\times 0.5 \\text{ mol} = 3 \\text{ mol}\\\\\n&1 \\text{ mol of carbon} = 12 \\text{ g}\\\\\n&3 \\text{ mol carbon} = 12 \\times 3 = 36 \\text{ g}\\\\\n&\\text{Hence, 36 g mass of carbon present in 0.5 mole of } \\mathrm{K}_4[\\mathrm{Fe(CN)}_6].\n\\end{align}",
  "correct_answer": 4
}