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Q.

Which of the following pairs of ions are isoelectronic and isostructural?

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a

CO32-,NO3-

b

NO3-,SO32-

c

ClO3-,SO32-

d

ClO3-,CO32-

answer is D.

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Detailed Solution

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Isoelectronic:
Same number of electrons Isostructure:
Same molecular geometry
 

PairTotal number of 
Valency e- s		Molecular geometry
CO32−24Trigonal planar
NO3−24Trigonal planar
ClO3−26Pyramidal
SO32−26Pyramidal
ClO3−26Pyramidal
CO324Trigonal planar
SO32−26Pyramidal
NO3−24Trigonal planar
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