Route 9. There might be one in jumping dust in a cave.
Tynamo will evolve into Elektrik will evolve into Elektross with a thunderstone in Pokemon White.
Eelektrik - Eelektross
Eelektrik does
Eelectrik into Eelectross
route 9
thunderstone cave
Pikachu+Thunderstone=Raichu Eevee+Thunderstone=Jolteon These are the only 2 pokemon that evolve with the thunderstone in pokemon emerald
it evolves with a thunderstone you can get one in chargestone cave
Pikachu evolves when you give it a thunderstone.
You can use a thunderstone on pikachu
The Pokemon that evolve using a thunderstone are: Pikachu into Raichu Eevee to get a Jolteon
Thunderstone can be used to evolve a Pikachu into a Raichu.