one would need to study each metal for its electrical charge/polarity. positive spin and magnetism is acidic, negative is alkaline. i know that silver is positive, whereas zinc is negative. place a chunk of silver in your right hand and a chunk of zinc in your left hand and lay quiet while gently grasping these metals. within seconds of laying still you can feel and electric current establish itself through your body and across your chest. its pretty cool.
i think much more to the point of any subtle aspects of mercury is that is is HIGHLY neurotoxic. what more does a person need to know?