A power source, such as a battery.
The answer is A.18 let me know if you want an explanation
Elements that have the greatest amount of Electrons in their Valance shell (valance electrons). Elements like Hydrogen are very reactive because they only have 1 valance electron.
Answer:
1 B
2A
#D
3B
1D
2B
3C
4A
A,C,A,B
C,A,C,A
C,A,A,B
Explanation:
Easy ive done this brings back memories
