Nope, physically it may fit but the 2010 uses different style connectors and locations physically on the board. PLus the battery is of higher wattage for better battery life, both needing a larger form factor and different style connector. Better off looking for a 2.66Ghz board for your 2010
There was never a 2.4 and 2.26 of the same year, the configs in '09 were 2.26 and 2.53, which in '10 got bumped to 2.4 and 2.66. If you compare a 2.4 and 2.66, or the other variety then I believe so.