Import Question JSON

Current Question (ID: 20971)

Question:

$\text{The molecules/ions that do not contain unpaired electrons among the following is:}$

Options:

1. $\text{O}_2^{2-}$
2. $\text{B}_2$
3. $\text{N}_2^{+}$
4. $\text{O}_2$

Solution:

$\text{Hint: Draw MOT diagram and check number of unpaired electron}$ $\text{O}_2^{2-} \quad (\text{Total number of electrons} = 18)$ $\sigma 1s^2, \quad \sigma^* 1s^2, \quad \sigma 2s^2, \quad \sigma^* 2s^2, \quad \sigma 2p_x^2, \pi 2p_y^2, \pi^* 2p_x^2 = \pi^* 2p_y^2$

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
}