Use TM80 (Rock Slide) on it.
Infernape
A move tutor in the Battle Frontier will teach one of your Pokemon Rock Slide. It costs 48 BP to do so.
Rock Slide is not a TM in Leafgreen. In Leafgreen Rock Slide is a Move Tutor move and the Move Tutor is hidden somewhere in Rock Tunnel.
Aggron doens't learn rock slide in this version
not, you will need to use tm80, rock slide, on onix.
If held by a Pokemon it will increase the power of rock type moves such as rock slide or rock throw. Giving it to a rock type Pokemon is highly suggested.
Rock Slide is taught by a move tutor in Rock Tunnel.
If you have a Pokemon that has a rock type move, then you can easily win. Rock slide works the best.
I tried chain breeding camerupt->spheal->horsea->bagon, but the spheal doesnt want to learn rock slide i dont get it, it is the same egg group,right? is there any pokemon with 2 egg groups than can learn rock slide so i can pass rock slide to bagon eventually?
Rock Slide: TM no.48 Effect: Deals non-contacting damage to the foe Pokemon. Has 30% chance to flinch the opposing Pokemon In Battle: Hurts both Pokemon in Double Battles Power: 75 Base Power (BP) Accuracy: 95% Type: Rock
By using electric or rock type moves! Eg thunder, or rock slide.