Answer:
Scientists believe the batteries (if that is their correct function) were used to electroplate items such as putting a layer of one metal (gold) onto the surface of another (silver), a method still practiced in Iraq today.
Explanation:
Elements in the same group have the same amount of electrons.
Elements in the same period have the same amount of atomic orbits.
Hope this helps!
B) Humus is the decayed organic material that gives soil its dark brown or black color.
Sodium has 11 protons and Chlorine has 17.
iE xplanation:am osrry nisot p ake inligsh
