Wastes
Fuel
Smoke
Gas
Toxic chemicals
Answer:
Bones are the correct answer.
Since Group 2 alkali earth metals have 2 valence electrons, they tend to lose those 2 when forming ionic bonds. And the Loss of Electrons = Oxidation (L.E.O. for short). Therefore this group, including Mg and Ca, have an oxidation of [+2].
So the correct answer is C) +2
Answer:
3
Explanation:
If oxygen reacts with iron, then both must be reactants and rust the product of that reaction
