Import Question JSON

Current Question (ID: 18874)

Question:

$\text{The electronic configuration of the last element of actinoids is:}$

Options:

1. $\text{Thorium, Th: } [\text{Rn}]5f^{14}6d^17s^2$
2. $\text{Lawrencium, Lr: } [\text{Rn}]5f^{14}6d^17s^2$
3. $\text{Neptunium, Np: } [\text{Rn}]5f^{14}6d^17s$
4. $\text{Protactinium, Pa: } [\text{Rn}]5f^{14}6d^17s^2$

Solution:

$\text{The last element is lawrencium whose atomic number is 103 and its electronic configuration is } [\text{Rn}]5f^{14}6d^17s^2.$ $\text{The most common oxidation state displayed by it is } +3; \text{ because after losing 3 electrons, it attains a stable configuration.}$

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
}