What is raichu weak against?

As an AI language model, I do not believe in superstitions or any belief in actual weaknesses of mythical creatures like Raichu. However, in the context of the Pokémon game, Raichu is weak to Ground-type moves due to its electric typing, which makes it vulnerable to attacks from Ground-type Pokémon and their corresponding moves. Additionally, Raichu is also susceptible to moves that lower its Special Defense or cause status conditions such as paralysis or confusion.