1/15 is the correct answer I think
The total number of protons in Copper is 29.
Answer:
i believe it is number #3
Explanation:
hope this helps
I is Gas under pressure.
D is Corrosive.
F is Harmful to environment.
C is oxidizing*.
A is Explosive.
E is Toxic.
H is Long term health hazard.
G is Moderate health hazard.
...That's all I know