Import Question JSON

Current Question (ID: 20974)

Question:

$\text{Which of the following sets does not contain isoelectronic species?}$

Options:

1. $\text{BO}_3^{3-}, \text{CO}_3^{2-}, \text{NO}_3^{-}$
2. $\text{SO}_3^{2-}, \text{CO}_3^{2-}, \text{NO}_3^{-}$
3. $(\text{CN}^-), \text{N}_2, \text{C}_2^{2-}$
4. $\text{PO}_4^{3-}, \text{SO}_4^{2-}, \text{ClO}_4^{-}$

Solution:

$\text{In the first case,}$ $\text{BO}_3^{3-} = 32 \text{ electrons}, \text{CO}_3^{2-} = 32 \text{ electrons}, \text{NO}_3^{-} = 32 \text{ electrons}$ $\text{In the second case,}$ $\text{SO}_3^{2-} = 42 \text{ electrons}, \text{CO}_3^{2-} = 32 \text{ electrons}, \text{NO}_3^{-} = 32 \text{ electrons}$ $\text{In the third case,}$ $\text{CN}^- = 14 \text{ electrons}, \text{N}_2 = 14 \text{ electrons}, \text{C}_2^{2-} = 14 \text{ electrons}$ $\text{In the fourth case,}$ $\text{PO}_4^{3-} = 50 \text{ electrons}, \text{SO}_4^{2-} = 50 \text{ electrons}, \text{ClO}_4^{-} = 50 \text{ electrons}$ $\text{Thus, option 2 is the correct answer because it does not contain isoelectronic species.}$

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
}