Gravite shortbow.
The overall best f2p Runescape weapon is actually a range weapon - Maple Longbow (sighted). It has a range bonus of over 100. The best f2p degradeable weapon is the Gravite 2h. Both are Dungeonneering weapons and need 45 Dungeonneering levels.
For F2p it would be the Rune 2Hander as it has the highest str bonus, but i prefer the scimitar:D
the most expensive: blue partyhat the most useful combat weapon: corrupt dragon scimitar
Weapons don't add to your defence bonuses. The best armour, however, would be full rune.
I think runescape is
world 57
The best weaon in rubescape for f2p is the rune skimmy because it is fast and powerfull. this is coolbutsmart from rs and actually its the rune2h because it hits higher than scimmy
The corrupt Dragon 2h is best tradable weapon on F2p, although is degrades rather fast. The Gravite 2h is not purchasable with gold, rather Dungeoneering tokens, and also degrades, but is the best weapon in Free-to-play.
Merchant Limpwurt roots, dropped by Hobgoblins.
As far as I know, no F2P item can do that. I'm not sure about P2P but it is highly unlikely without Prayer or other bonuses.
XP- something like 10-20k
Nope :)