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  4. The compound that does not produce nitrogen gas by the thermal decomposition is :

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Q. The compound that does not produce nitrogen gas by the thermal decomposition is :

JEE MainJEE Main 2018The p-Block Elements - Part2

Solution:

$\left( NH _{4}\right)_{2} Cr _{2} O _{7} \xrightarrow{{\Delta}} N _{2}+4 H _{2} O + Cr _{2} O _{3}$

$NH _{4} NO _{2} \xrightarrow{\Delta}N _{2}+2 H _{2} O$

$\left( NH _{4}\right)_{2} SO _{4} \xrightarrow{\Delta} 2 NH _{3}+ H _{2} SO _{4}$

$Ba \left( N _{3}\right)_{2} \xrightarrow{\Delta}Ba +3 N _{2}$

Among all the given compounds, only $\left( NH _{4}\right)_{2} SO _{4}$ do not form dinitrogen on heating, it produces ammonia gas.