Published by:
CGP EDU Academic Team
Published on: August 12, 2026
Select incorrect statement.
A
Reaction of CO2 and H2 produces carbon monoxide.
B
The toxicity of CO is due to its ability to bind to the Fe atom in haemoglobin through multiple bonding (the d 
- p 
)
- p )
C
SiC and B4C are covalent carbides.
D
NCN2– ion is not isostructural and isoelectronic with CO2.
Text Solution
Verified by ExpertsThe correct answer is:
D
Both have same number of electrons i.e. 22, so isoelectronic and are linear so also isostructural.
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