Can a optiplex 755 use a i5 processor

Hello mba22;

No socket 1156/1155 Core i5 CPUs in the socket 775 motherboard in Dell Optiplex 755.
And Optiplex 755 has a BTX motherboard & case, meaning that the PCI-E slot is at the "wrong" end of the motherboard and faces the "wrong" way if compared to a standard ATX motherboard and case.