the only way to make magneton evolve is to level it up at Mt. Coronet
In the Pokemon games Magnetron levels up during game play. This Pokemon will level up at Kalos Route 13 or Mount Coronet.
it doesn't evolve in Pokemon ruby.
Weezing does not evolve in Pokemon Ruby.
There isn't a Pokemon called Magnetron, but there is one called Magnezone. Magnezone is the final form of Magnemite. Anyway, you need to go to Mt. Coronet and level Magneton up 1 level and it will evolve. Hope I helped.
Nosepass doesn't evolve in Ruby, sorry.
Minun does not evolve!
Shedinja does not evolve.
Corpish will evolve at level 30
Whismur will evolve around level 27.
It will evolve at level 48
level 30
Level 50