Import Question JSON

Current Question (ID: 21547)

Question:

$\text{The common oxidation states associated with cerium (Ce) are:}$

Options:

1. $+3, +4$
2. $+2, +3$
3. $+2, +4$
4. $+3, +5$

Solution:

$\text{Cerium is a lanthanoid and the most common oxidation state of lanthanoids is } +3. \text{ Hence, Ce shows } +3 \text{ oxidation state.}$ $\text{The electronic configuration of Ce (58) is } [\text{Xe}] 4f^1 5d^1 6s^2. \text{ Due to noble gas configuration, Ce also shows } +4 \text{ oxidation state.}$ $\text{Ce}^{4+} \text{ is equal to } [\text{Xe}].$ $\text{Hence, the most stable oxidation state is } +3 \text{ but } +4 \text{ is also existing.}$

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
}