J.R. S. answered 01/05/21
Ph.D. University Professor with 10+ years Tutoring Experience
Mg(s) + Ni(NO3)2(aq) ==> Mg(NO3)2(aq) + Ni(s) ... balanced equation
-exothermic - single displacements are exothermic and Mg is more reactive than Ni so the reaction happens
-redox - Mg is oxidized and Ni is reduced
-simple displacement - single displacement because Mg displaces Ni