This verse has nothing to do with man's eternal fate but what would happen to the king of Tyrus in this life. vs. 12
Death is the point in time end of life, it has no physical presence and cannot be literally thrown anywhere. Hell if it is the grave, as many people say, is a hole in the ground. A hole cannot be thrown anywhere. If it means the place of punishment then it can be thrown. But there is a scriptural answer.
Rev_6:8 And I looked, and behold a pale horse: and his name that sat on him was Death, and Hell followed with him. And power was given unto them over the fourth part of the earth, to kill with sword, and with hunger, and with death, and with the beasts of the earth.
The angel of death and the demon of hell can be thrown in to the lake of fire and their power to kill ended.