The 1WL DoS can also be understood by correlating it with the the average water structure on the surface. In particular, in the first high-density water region on Pt, Pd, and Rh (∼ 2 Å, Figure ) the metal-water molecule angle θ ∼ 120 • . In this region, number of hydrogen bonds donated by a water molecule is higher than in bulk water (Figure ). Together these factors lead to an increased O-O-O DoS and indicate a rigid interfacial water in the first high-density water region on Pt, Pd, and Rh. In the second high-density region (∼ 3 Å, Figure ) the metal-water angle θ ∼ 70 • -75 • for Rh, Pd, and Pt while Ag and Au do not notably prefer any water orientation. The number of hydrogen bonds made by a water molecule on all the studied metal surface is lower than in bulk water. Only on Au and Ag the total DoS in the O-O region is slightly more populated than in bulk water which would indicate a slightly increased short-range water structure on these metals when combined with the structural information. However, correlations between the structure and DoS in the second high density region cannot be readily identified.