Covalent radii (molecular single bond): periodicity

Covalent radii (molecular single bond)

Units

pm

This gives single-bond covalent radii using specific group valencies and oxidation numbers.

Notes

This is a self-consistent system of additive covalent radii, R(AB)=r(A) + r(B), is set up for the entire periodic table, Groups 1⁺18, Z = 1⁺118. The primary bond lengths, R, are taken from experimental or theoretical data corresponding to chosen group valencies. All elements and all admitted data points are treated as equal. Radii were then obtained self-consistently through a least-squares fit. Specific molecular coordination numbers and oxidation states are chosen for each element involved.

Literature sources

1. P. Pyykkö and M. Atsumi, Molecular Single-Bond Covalent Radii for Elements 1Ð118, Chem. Eur. J., 2009, 15, 186-197.

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• Periodicity