Import Question JSON

Current Question (ID: 7909)

Question:

Abnormally high ionization enthalpy of $\text{B}$ as depicted in the graph below can be due to :

Options:

1. Completely filled $2p$ subshell.
2. Completely filled $2s$ subshell. (Correct)
3. Completely filled $3d$ subshell.
4. Completely filled $4f$ subshell.

Solution:

HINT: $\text{B}$ is beryllium. Explanation: The element $\text{A}$, $\text{B}$, and $\text{C}$ are lithium, beryllium, and boron. The ionization energy of $\text{B}$ is extremely high because it has completely filled $2s$ orbital. The electronic configuration of beryllium is $1s^22s^2$, it is a stable configuration, thus, it has high ionization enthalpy.

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
}