What the definition of each period and group and element and every valence electron
Galvanizing protects from rust in a number of ways: It forms a barrier that prevents corrosive substances from reaching the underlying steel or iron. The zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still be protected by the remaining zinc.
Earth isn’t likely going to be running out of gold for around 50-100 years
Answer:
Exothermic
Explanation:
I think it is exothermic because heat is being released
Because group 1a and 2a are most reactive due to their least number of electrons in their outmost shell compared to group 8a(18)