Import Question JSON

Current Question (ID: 8030)

Question:

The correct order of the increasing bond angles in the following triatomic species is:

Options:

1. $\text{NO}_2^- < \text{NO}_2^+ < \text{NO}_2$
2. $\text{NO}_2^- < \text{NO}_2 < \text{NO}_2^+$ (Correct)
3. $\text{NO}_2^+ < \text{NO}_2 < \text{NO}_2^-$
4. $\text{NO}_2^+ < \text{NO}_2^- < \text{NO}_2$

Solution:

$\text{HINT: According to VSEPR theory, the order of repulsion of electrons is lp-lp repulsion > lp-bp repulsion > bp-bp repulsion.}$ $\text{Explanation:}$ $\text{Higher the number of lone pair of electrons (greater is repulsion) lower is the bond angle and vice-versa.}$ $\text{In NO}_2^\text{-} \text{ one lone pair of electron is present while in NO}_2^\text{+} \text{ no lone pair of electron is present.}$ $\text{Hence, the correct order of bond angles is NO}_2^\text{-} < \text{NO}_2 < \text{NO}_2^\text{+}$

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
}