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.
A Shuckle doesn't evolve
You need to trade it and it will evolve
Paras will evolve into Parasect.
Togekiss cannot evolve.
16
evolve it from a cyndiquil