if you use a super rod in the safari zone you can find a dratini. train it until it evovles or you can get a dratini at the celadon game corner prize room.
dragonite is the strongest dragon there is in leafgreen
Dragonair evolves into Dragonite at level 55.
Dragonite is the last evolution of Dratini.
hyper beam
It can't learn that move cause it doesn't exist in leafgreen.
dragonair evolves at lv 55 but dragonite doesnt evolve
Venusaur,Rapidash,Gyarados,Pikachu,Pidgeot and Dragonite
dragonite doesnt evolve
I think it is very good. But it depends how far you are. And what about Snorlax???? I think that you could also get a better electric Pokemon and that you could get a better Pokemon than Nidoqueen.
Go to http://bulbapedia.bulbagarden.net/wiki/Dragonite_(Pokémon) It has a list of all the moves Dragonite can learn in every generation.
Either get a Dratini from FireRed or LeafGreen and train it to level 55 or get the purified one from Pokemon XD: Gale of Darkness.
No if you want one you will need to trade a dratini from firered or leafgreen to sapphire then train it to level 55 OR purify the shadow dragonite in Pokemon xd gale of darkness then trade it to sapphire.