I believe this topic is quantitative chemistry but I need the equation to work this out sorry
1 is D - double-replacements do not make solid metals
2 is A - to have complete combustion the original compound must ONLY have C, H and O
3 is B - the elemental Mg replaces the H in the HCl
Answer:
The electron configuration for a
Mn3+ ion is [Ar]3d4
Explanation:
