Answer:Nhóm gồm tất cả các kim loại tan trong axit sunfuric đặc nóng nhưng không tan trong axit sunfuric lo
Al, Cu, Au.
Al, Fe, Cr.
Ag, Fe, Pt.
Ag, Cu, Hg.
Explanation:
The answer is: <span>A.The gravitational pull of the moon on the water near the coast </span>
Answer:
Valence electrons. they can be used to determine the group of an element.
Explanation:
Because neither can be created or destroyed
