+ -> +

balance the chemical equation.
a) 1, 2, 1, 2
b) 1, 1, 3, 1
c) 3, 1, 3, 2
d) 2, 3, 2, 3

the answer is A)1,2,1,2

Explanation:

hop is is correct

C)3, 1, 3, 2

Explanation:

To balance the equation, start with the simple element, Fe. You need a coefficient of 2 on the product side to balance the Fe. Then balance the O. You need a coefficient of 3 on the product side to balance the O. This makes 3 Magnesium atoms that are left unbalanced. Finally, put a 3 on the Mg on the reactant side to finish, giving you coefficients of 3, 1, 3, 2.

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons