MCQ
Which of the following are isoelectronic and isostructural $NO_3^ - ,\,CO_3^{2 - },\,ClO_3^ - ,\,S{O_3}$
- ✓$NO_3^ - ,\,CO_3^{2 - }$
- B$S{O_3},\,NO_3^ - $
- C$ClO_3^ - ,\,CO_3^{2 - }$
- D$CO_3^{2 - },\,S{O_3}$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Assertion $A :$- Carbon forms two important oxides $- CO$ and $CO _2 . CO$ is neutral whereas $CO _2$ is acidic in nature.
Reason $R :$- $CO _2$ can combine with water in a limited way to form carbonic acid, while $CO$ is sparingly soluble in water.
In the light of the above statements, choose the most appropriate answer from the options given below :-
Reason : The presence of additional $d-$ electron offer poor screening effect for the outer electrons from increased nuclear charge.