Answer:
D i think. Not sure.
Explanation:
I mean i just did it myself, and i dont really do chemistry, but I would say D sorrry if i made you get it wrong!!
+2 D. because this atom is magnesium and mag. has a charge of +2
20 g/cm3 I got this because 120 divided by 6 is 20
Answer:
it dissolves or disintegrates
Explanation: