Which of the following are isolobal?

B H_{4}^{-}

and

N H_{4}^{+}

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C O_{2}

and

S O_{2}

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N_{2}

and

N O

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All of these

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Solution

The correct option is B $B H_{4}^{-}$ and $N H_{4}^{+}$
The molecular fragments are deemed to be isolobal is they possess same number of frontier molecular orbitals with
(i) similar shape & radial extent
(ii) approximately the same energy
(iii) same number of electrons available for cluster bonding.
Both ${B H_{4}}^{-}$ & ${N H_{4}}^{+}$ have tetrahedral shape, with four lobes of $s p^{3}$ - hybridized orbitals.

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Similar questions

The rates of diffusion of $S O_{2}, C O_{2}, P C l_{3} a n d S O_{3}$ are in the following order –

N_{2}, C O, C N^{-}

N O^{+}

S O_{2}, C O_{2}, P C l_{3}

S O_{3}

The rates of diffusion of $S O_{2}, C O_{2}, P C l_{3} a n d S O_{3}$ are in the following order –

S O_{2}

C O_{2}

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