Which is iso-structural ?

Which of the following is iso-structural with CO_2 ?

Carbanion is iso-structural with

Ammonia is iso-structural with:

Ammonia is iso-structural with:

Carbon dioxide is iso-structural with

Which of the following are isolectronic and iso-structural ? NO_(3)^(Θ) , CO_(3)^(2-) , CIO_(3)^(Θ) , SO_(3) .

In which of the following pairs, the two spices are iso-structural?

Which of the following pairs are iso-structural ?