there are a total of 202 pokemon
Beat Wallace/Steven
Have to beat the elite four.
Raichu
Chimecho
420
weedle
if national pokedex you go to the other gym leaders if normal pokedex you to the left at oldale town
Yes, if you trade it you will automatically get the national pokedex on Pokemon Emerald
hoen region and when you beat the elite for the national pokedex
Just catch the most Pokemon you can ;)
the answer is on the website serebii.net/pokedex/dp.
Beat the Elite Four and get the National Pokedex