By far, the most used AMD mobile socket is the 638-pin S1 socket.
You can use an amd sempron or an amd athlon II with an am3 socket, but when am3 was released it was meant to be used with the amd phenom line of CPUs. You can use all three: amd sempron, amd athlon II & amd phenom.
The latest processor made by AMD is the AMD A10-7850K. It is used in desktops and laptops. The latest processor from Intel is the Intel Core M processor.
The AMD Athlon originally used Slot A. Later Athlons used Socket A.
Currently FCPGA988 is the most popular Intel mobile socket, the most used socket for AMD is the 638-pin S1 socket.
Socket A is also known as Socket 462. This CPU socket is used for AMD processors, manufactured by Athlon Thunderbird.
Socket F
socket 7 or socket A
Socket 462
Some Cpu's that use Socket A are Athlon Xp, Athlon Mp, Athlon Model 4 AMD's Athlons and Duron use Socket A, also known as Socket 462. The AMD Athlon and the AMD Duron use a 426-pin socket called Socket A. The Athlon Thunderbird
Socket A or Socket 462 (same thing, different names).
Most likely not, unless its a Socket 754.