I've actually used the magnet test to determine if a gold necklace of mine was real or not. If the gold item aka the crown is attracted to a magnet, it is definitely not real gold.if it isn't then its real gold.
Can vary. Carbon is used quite commonly, and extracts metal oxides, works with zinc, iron, tin, lead and copper.
Answer:
I believe it's false because the atomic number is the number of protons in the nucleus of an atom.
I don’t understand the question be more specific or take a picture
