Which of the following give when heated?

CHEMISTRY · Multi correct · CBSE · Chemistry · Classification of Elements and Periodicity in Properties · Classification of Elements and Periodicity in Properties

Problem

Which of the following give N2\mathrm{N_2} when heated? (1) NaN3\mathrm{NaN_3} (2) NH4NO2\mathrm{NH_4NO_2} (3) NH4NO3\mathrm{NH_4NO_3} (4) (NH4)2Cr2O7\mathrm{(NH_4)_2Cr_2O_7}

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