Final answer:
In the Arthurian legend, Mordred and Arthur engage in a fierce battle at the Battle of Camlann. Both are mortally wounded, with Mordred being killed and Arthur suffering a mortal wound. The weapons used in the fight were their swords, with Arthur using Excalibur.
Step-by-step explanation:
The events leading to the death of Mordred and the mortal wounding of Arthur are depicted in the Arthurian legend. According to the legend, Mordred was Arthur's illegitimate son and sought to claim the throne. As Arthur returned from his campaign against Mordred, a fierce battle broke out between them at the Battle of Camlann. Both Mordred and Arthur were mortally wounded in the battle.
The weapons used during the fight were their swords. Arthur used his famous sword, Excalibur, while Mordred used his own weapon. The battle was described as brutal and intense, with both warriors fighting fiercely. In the end, Mordred was killed and Arthur suffered a mortal wound.