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Solution


Q.

Choose the INCORRECT statement             [2026]
1 Among the isotopes of carbon, C13 is a radioactive isotope.  
2 Carbon cannot exceed its covalency more than four.  
3 CO2 is the most acidic oxide among the dioxides of group 14 elements.  
4 Carbon exhibits negative oxidation states along with +4 and +2.  

Ans.

(1)