Q3 / 125 · BITSAT 2014 · Chemistry

The valency shell of element A contains 3 electrons while the valency shell of element $\mathrm{B}$ contains 6 electrons. If A combines with $\mathrm{B}$, the probable formula of the compound formed will be

  • A
    $\mathrm{AB}_{2}$
  • B
    $A_{2} B$
  • Correct answer
    C
    $\mathrm{A}_{2} \mathrm{~B}_{3}$
  • D
    $\mathrm{A}_{3} \mathrm{~B}_{2}$

Solution

The element A is $\mathrm{ns}^{2} p^{1}$ and $\mathrm{B}$ is $\mathrm{ns}^{2} p^{4}$. They can form compound of the type $\mathrm{A}_{2} \mathrm{~B}_{3}$

Hence, the correct answer is option: 'C'.

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