Import Question JSON

Current Question (ID: 7963)

Question:

$\text{Which of the following pairs of ions are isoelectronic and isostructural?}$

Options:

1. $\text{CO}_3^{2-}, \text{SO}_3^{2-}$
2. $\text{ClO}_3^{-}, \text{CO}_3^{2-}$
3. $\text{SO}_3^{2-}, \text{NO}_3^{-}$
4. $\text{ClO}_3^{-}, \text{SO}_3^{2-}$ (Correct)

Solution:

$\text{HINT: Isoelectronic = Same number of electrons and Isostructural = same shape}$ $\text{Explanation:}$ $\text{STEP 1:}$ $\text{Shape of certain molecules is given as:}$ $\text{STEP 2:}$ $\text{Number of electrons in the ions given:}$ $\text{CO}_3^{2-} = 6 + 2 + 24 = 32$ $\text{SO}_3^{2-} = 16 + 2 + 24 = 42$ $\text{ClO}_3^{-} = 17 + 24 + 1 = 42$ $\text{CO}_3^{2-} = 6 + 24 + 2 = 32$ $\text{NO}_3^{-} = 7 + 2 + 24 = 33$ $\text{Therefore, } \text{ClO}_3^{-} \text{ and } \text{SO}_3^{2-} \text{ are isoelectronic and isostructural (pyramidal).}$

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
}