Answer: none of the above
Explanation:
It should be 2,1,1,2 to give a balanced chemical reaction
Ore is a deposit in Earth's crust of one or more valuable minerals. The most valuable ore deposits contain metals crucial to industry and trade, like copper, gold, and iron. Copper ore is mined for a variety of industrial uses. Copper, an excellent conductor of electricity, is used as electrical wire.
Answer:
The halogens form acidic compounds with hydrogen. The halogens are the most reactive among all the nonmetals
Answer: This means that the answer can be proven wrong.
Explanation:
Hope this helps!!