Elephants are really cool
Answer: Barium Oxide
We know that:
James mixed Ba + O²
Now, let's see what will happen when he does mix it.
The Barium will give it's electrons up to the oxide.
The Oxide and Barium will both reach noble gas status.
In the end, James will get Barium Oxide.
Best of Luck!
2) is the answer. graphite and diamonds possess the same molecular structes however the bonds and structures of diamonds are considerably stronger and more tightly packed respectively