Final answer:The netionicreactions for the given chemical reactions demonstrate the concept of single replacement reaction. The reactants will only interact if the single element is more reactive than the one in the compound. The result will be the single element replacing the less reactive one in the compound.Explanation:To understand the net ionic reactions, one first needs to realize that this is a singlereplacementreaction. A single replacement reaction is a type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound.1) Mg + Zn(NO3)2 doesn't actually react because magnesium is less reactive than zinc.2) The net ionic equation for Zn + Fe(NO3)2 is Zn (s) + 2NO3-(aq) → Zn^2+ (aq) + 2NO3- (aq) after simplification, the net ionic equation is Zn(s) → Zn^2+(aq) + 2e-.3) The same logic applies to Fe + Mn(NO3)2, so the net ionic equation would be: Fe(s) → Fe^2+(aq) + 2e-.4) There is no reaction as well for Sn + Ca(NO3)2 because tin is lessreactivethan calcium.5) For Mn + SnCl4, the net ionic equation would be Mn(s) → Mn^2+(aq) + 2e-.Please note that these net ionic equations only consider the fact that metals (upon reaction) will lose electrons, going from a zero oxidation state to a positiveoxidationstate.Learn more about Net Ionic Reactions here:brainly.com/question/29656025#SPJ2...

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