TM25 (Thunder) can be bought at the Goldenrod City Department Store for 5500 Pokedollars.
Thunder stone is not a TM, it's an item to evolve things like pikachu.
TM73 Thunder Wave can be bought at the Battle Frontier shop.
By TM, Lugia can learn Thunderbolt, Thunder, Shock Wave, Charge Beam, and Thunder Wave.
Scratch is NOT a TM.
I don't know man but Lance's Dragonite knows it. Maybe by TM. (This is for soul silver by the way)
It isn`t a TM :( It was a TM in the original Gold and Silver and Crystal.
TM 27 is Return.
there is no TM whirlwind in soul silver
There is no TM for Air Slash.
is the TM number 13
There is no TM Dragon Drance
There is none