You always adjust numbers and it will be before the element
so you Neva add or change a subscript
Magnesium. You can count the electrons in each level and because the number of electrons is the same with protons you have the atomic number based of which you can get the element in the periodic table
30. mixture of compounds
31. compound
32. element
33. compound
34. compound
34. mixture of elements and compounds
Answer:
the answer is a
Explanation:
i did process of elimination and i got a
