B. Most rocks are composed of single mineral
The awnser is A. Idek I looked it up so yeah that’s the awnser
Answer:
c
Explanation:
it is corundum now please follow me
Heat underneath the ground making its water boil
Answer:
2
Explanation:
The compounds XCl₂ and X₃N₂ shows that the valency of X is 2. If they are ionic compounds then X is a metal. The metals having valency=2 mostly reside in group-2.
