Yes if you capture the Pikachu that wears a Christmas hat in Pokemon GO and opt to evolve it then Raichu will keep the Christmas hat.
Pikachu evolves into Raichu. To evolve it, you have to use a Thunderstone on it.
Pikachu turns into Raichu.
Pikachu evolves into Raichu with a ThunderStone.
Pikachu ONLY evolves into a Raichu when you give it a Thunderstone.
Pikachu will evolve into Raichu when given a thunder stone. If you mean Ash's Pikachu, then it very unlikely he will evolve his Pikachu, as Pikachu is the Pokemon Franchise's mascot.
you can evolve pikachu into Raichu and Eevee into Jolteon
You can get a Raichu when you evolve Pikachu. You have to expose Pikachu to a Thunderstone to evolve it.
Pikachu can evolve into a Raichu.
if you have a pikachu,put a thunderstone on it and it will evolve into raichu
pikachu then pikachu evolves with a thunderstone to get raichu
Raichu, the evolved form of Pikachu, cannot evolve again. Also, as of December 2014, there is no official announcement of a Mega Raichu either.In order to evolve Pikachu into Raichu, a Thunderstone is needed.
Raichu never evolves. Unless you meant Pikachu, which evolves into Raichu. Or Pichu, who isn't in Leafgreen but evolves into Pikachu, then Raichu.