GEO-OK PM7 Magnesium hydride (MgH2) H=37.5 HR=GPSS1993 Mg 0.00000000 +0 0.0000000 +0 0.0000000 +0 0 0 0 H 1.69012924 +1 0.0000000 +0 0.0000000 +0 1 0 0 H 1.69012933 +1 179.8988564 +1 0.0000000 +0 1 2 0