Which of the equations below is a balanced chemical reaction? question 1 options: 3 mg + o2 → 2 mgo 2 mg + o2 → 2 mgo 2 n2 +7 h2 → 2 nh3 2 n2 + 3 h2 → nh3

Choice 1) Has 3 Mg one one side of the equation and 2 on the other, NOT the answer.

Choice 2) has 2Mg and 2O on each side, it is balanced

Choice 3) 4N on one side and 2N on the other, NOT the answer

Choice 4) 4N on one side and 1N on the other, NOT the answer

Please be more clear how you format the question in could barely read it

*tilts head* sounds more like a statement

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.