Prominent copper sulfide minerals include Cu2S (chalcocite) and CuS (covellite).
The answer is d because in both sides there are 1 magnesiums 1 oxygens 2 lithiums and 2 chlorines
The answer is a cation, I may be wrong but cation is plus and anion is subtract
Answer:
The first element in the periodic table is hydrogen.
Explanation:
Hydrogen has an atomic number of one, making it the first element of the periodic table. The atomic number of an element is just the number of protons in the nucleus, so hydrogen has one proton. The neutrons and electrons do not affect the atomic number. After hydrogen with one proton comes helium with two, lithium with three, beryllium with four, and so on.
