Forum Post: BQ252504 pin out

I have a BQ252504 DC-DC convertor. I mounted the 16 QFN to a Schmart board.

 I am no longer able to identify pin 1.  during the the soldering process the pin 1 identifier has been removed from the top of the part.

 I used a water soluble flux that may have removed the marking.  Question is there a way to identify any pin or pins with an ohm meter?

thanks

John kg9dk