Assertion: hydrogen's form | /r/HasProperty | the zundelcation
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Source sentences:
text: In this symmetric form (the 'Zundel' cation, shown right, lifetime ≈ 0.5 ps ), all O-H bonds are the same length (0.95 Å) except the two involved in the hydrogen bond, which are covalent and equally-spaced (1.18 Å; similar to that in ice-ten, and as found by neutron diffraction in some crystals midway between the oxygen atoms [118a], such as the dihydrates of HCl and HClO 4 , for example, [H 5 O 2 +][ClO 4- ]).