You cannot evolve a Magneton in Heartgold, you'll have to trade it to Pearl/Diamond/Platinum for that :(
It's called MT. Coronet, and Nosepass and Magenton evolve in MT. Coronet when leveled up
No, Hitmontop does not evolve in Pokémon SoulSilver.
he does not evolve.
ditto does not evolve
No
almost all of them do.
You need to trade it and it will evolve
A Shuckle doesn't evolve
Togekiss cannot evolve.
Paras will evolve into Parasect.
16
evolve it from a cyndiquil