The design of the male end of the charger has been redesigned to resist fraying but that doesn't affect its basic functionality. A MagSafe Power Adapter is a MagSafe Power Adapter.
I have two Macbooks (2008, 2011) and one MacbookPro (2006), and use both styles of chargers. They're completely interchangeable although the 85w MagSafe Power Adapter A1343 is [scarequotes] intended [/scare] for the MBP and the 60w version, the model number of which I cannot retrieve for you given the 11.5 lb. cat on my feet, is intended for the Macbook.
When the old style p/a that came with my '06 MBP failed due to fraying I used an old style 60W p/a for months until I got around to buying a new style 85W p/a. Absolutely no performance difference though the brick did get a tad toasty at times.
BTW, if you have orphan miles in UA or some other program with shopping you can one for a song. I redeemed 12,600 miles for a brand spanking new 85W p/a. Regular retail is $80(!).