Question

Of the reactions below, which one is a double-displacement reaction?
2 points
Cd(NO3)2 + Na2S → CdS + 2 NaNO3
NH4Cl → NH3 + HC[
2N2 + 3 H2 → 2 NH3
2 Mg + O2 → 2 MgO

Answer 1

first option is the correct answer