Periodic Table Building Blocks

Periodic Table Building Blocks H and He are brothers, but long ago He was granted title and lands, leaving behind his younger sibling. Since then, they have been on opposite sides of war, H unwilling to be civil and even-tempered. In a world where elements collide, only you can create order out of chaos. Will you strike Au? (Note: At ThinkGeek, we don't suggest striking anyone. But Gold, we wouldn't mind striking Gold.) Just be careful of Ruthenium, we hear she's pretty ruthless...