Import Question JSON

Current Question (ID: 7644)

Question:

$\text{In alkaline earth metals, the properties, from the following, that will increase from Be to Ba are:}$ $\text{(i) Atomic radius}$ $\text{(ii) Ionisation energy}$ $\text{(iii) Nuclear charge}$

Options:

1. $\text{(i) and (ii)}$
2. $\text{(i) and (iii)}$ (Correct)
3. $\text{(ii) and (iii)}$
4. $\text{(i), (ii), and (iii)}$

Solution:

$\text{HINT: Down the group size increases, ionization enthalpy decreases.}$ $\text{Explanation:}$ $\text{Atomic radius and nuclear charge increase from top to bottom because the number of shells and atomic mass increases down the group.}$ $\text{The nuclear charge should not be confused with an effective nuclear charge, which decreases down the group.}$ $\text{A nuclear charge is nothing but a number of protons. So, down the group number of protons are increases, and nuclear charge increases. Down the group atomic radius, increases and ionization energy decreases.}$

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
}