Import Question JSON

Current Question (ID: 18740)

Question:

$\text{The low spin complex among the following is:}$

Options:

1. $\text{Fe(CN)}_6^{3-}$
2. $\text{Co(NO}_2\text{)}_6^{3-}$
3. $\text{Mn(CN)}_6^{3-}$
4. $\text{All of the above}$

Solution:

$\text{Hint: } \text{CN}^- \text{, are strong field ligands. They form low-spin complexes}$ $\text{Step 1:}$ $\text{Strong field ligand like } \text{CN}^- \text{, NO}_2^- \text{, CO etc form low spin complex.}$ $\text{In the case of a strong field ligand } \Delta_o > \text{ pairing energy, so, the low spin complex is formed.}$ $\text{Step 2:}$ $\text{All three complexes are low-spin complexes, hence, option 4 is the correct answer.}$

Import JSON File

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
}