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Current Question (ID: 8094)

Question:

$\text{Which of the following conversions demonstrates an increase in bond order and a change in magnetic behaviour?}$

Options:

1. $\text{NO} \rightarrow \text{NO}^+$
2. $\text{O}_2 \rightarrow \text{O}_2^+$
3. $\text{N}_2 \rightarrow \text{N}_2^+$
4. $\text{C}_2 \rightarrow \text{C}_2^+$

Solution:

$\text{HINT: Follow the MOT diagram of the given species.}$ $\text{Explanation:}$ $\text{STEP 1: The electronic configuration of NO is as follows:}$ $\sigma_{1s}^2, \sigma_{1s}^{*2}, \sigma_{2s}^2, \sigma_{2s}^{*2}, \pi_{2p_y}^2, \pi_{2p_z}^2, \sigma_{2p_x}^2, \pi_{2p_y}^{*1}, \pi_{2p_z}^{*0}$ $\text{The bond order of NO is 2.5. It is paramagnetic in nature.}$ $\text{STEP 2: The electronic configuration of NO}^+ \text{ is as follows:}$ $\sigma_{1s}^2, \sigma_{1s}^{*2}, \sigma_{2s}^2, \sigma_{2s}^{*2}, \pi_{2p_y}^2, \pi_{2p_z}^2, \sigma_{2p_x}^2, \pi_{2p_y}^{*0}, \pi_{2p_z}^{*0}$ $\text{The bond order is 3. It is diamagnetic in nature.}$ $\text{Hence, the answer is option one.}$

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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
}