MCQ
Which of the following are isoelectronic and isostructural?
$NO^-_3, CO^{2-}_3 ,CO^-_3 ,SO_3$
- A$NO_3^- , CO^{2-}_3$
- B$SO_3 , NO_3^-$
- C$ClO_3^- , CO^{2-}_3$
- D$CO^{2-}_3, ClO_3^-$
✓
Answer
Number of electrons in the compound is:
$\mathrm{NO}_{3}^{-}=32 \mathrm{e}^{-}$
$\begin{array}{l}\mathrm{CO}_{3}^{2-}=32 \mathrm{e}^{-} \\\mathrm{ClO}_{3}^{-}=42\mathrm{e}^{-}\end{array}$
$\mathrm{SO}_{3}^{-}=41 \mathrm{e}^{-}$
Therefore, $\mathrm{NO}_{3}^{-}$ and $\mathrm{CO}_{3}^{2-}$ are isoelectronic The structures of both $\mathrm{NO}_{3}^{-}$ and $\mathrm{CO}_{3}^{2-}$ is trigonal planar. Therefore $\mathrm{NO}_{3}^{-}$ and $\mathrm{CO}_{3}^{2-}$ are isostructural also.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A person living in Shimla observed that cooking food without using pressure cooker takes more time. The reason for this observation is that at high altitude :
What is the $pH$ of the resulting solution when equal volumes of $0.1\, M\, NaOH$ and $0.01\, M\, HCl$ are mixed?
→The following is (are) endothermic reaction
Which is incorrect for paper chromatography
What is the work function of the metal if the light of wavelength $4000\, \mathop A\limits^o $ generates photoelectrons of velocity $6\times10^5\, ms^{-1}$ from it? ............. $\mathrm{eV}$ (Mass of electron $= 9\times10^{-31}\, kg$ Velocity of light $= 3\times10^8\, ms^{-1}$ Planck’s constant $= 6.626\times10^{-34}\, Js$ Charge of electron $= 1.6\times10^{-19}\, J\,eV^{-1}$)
→The enthalpy change on freezing of $1\, mol$ of water at $5\,^oC$ to ice at $-5\,^oC$ is .....$ kJ\, mol^{-1}$
→(Given ${\Delta _{fus}}H = 6\, kJ\, mol^{-1}$ at $0\,^oC$,
$C_p(H_2O, l) =75.3\, J\, mol^{-1} \, K^{-1}$ ,
$C_p(H_2O, s) = 36.8\, J\, mol^{-1} \, K^{ -1}$ )
At normal temperature, $X$ and $Y$
→Water is liquid due to
Which of the following order is incorrect for size?
Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out in the presence of