Do I ever get xp for my party member's kills?

I've heard xp "Is not split" in D3 parties, but to whom is it given?

If there are a dozen monsters on the screen worth 100xp each, and my partner kills them all with some nuke (while I idly watch) do we each get 1200xp?

If so, and he kills the same batch of monsters while I am very far away, do I still get the xp?

Solution 1:

XP is duplicated for each party members within "a screen and a half"¹ of the kill, as if each member got the kill themselves. (Though all party members will get quest-end XP regardless of location.)

This is a departure from Diablo 2, where XP was literally divided among party members.

In your example, yes, you each would get 1200 XP, but not if you're far away ("screen and a half").

Solution 2:

As long as you are in the same area as the kill occurs, you will each get the full experience for the kill. I believe the no splitting refers to the fact that it it isn't divided by the number of players.