Import Question JSON

Current Question (ID: 18860)

Question:

$\text{The configuration that shows the outer transition element among the following is:}$

Options:

1. $[\text{Rn}]7s^2$
2. $[\text{Xe}]4f^75d^16s^2$
3. $[\text{Xe}]5d^16s^2$
4. $[\text{Rn}]5f^76d^17s^2$

Solution:

$\text{HINT: The d-block elements are the outer transition elements.}$ $\text{Explanation:}$ $\text{All given configurations belong to the f-block element except the configuration given in option 3, because here the last valence electrons fill in d-orbitals.}$ $\text{This configuration given in option 3rd is a d-block element.}$ $\text{Actually it is 5th transition series element Lanthanum, La, atomic no 57.}$

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
}