Question

What is bonds length? How is measured?

Answer 1

Answer:

In a bond between two identical atoms, half the bond distance is equal to the covalent radius. Bond lengths are measured in the solid phase by means of X-ray diffraction, or approximated in the gas phase by microwave spectroscopy. A bond between a given pair of atoms may vary between different molecules.

Answer 2

Explanation:

Of course, the identification of a new molecule is distinctly different than providing useful information about that molecule. Below is a list of some of the useful information we have provided for the first time. I have chosen to list just two parameters, the ground state bond length and the ground state symmetry. These bond lengths may be given as r0 (corresponding to the average bond length in the v=0 vibrational level) or re (corresponding to the bond length at the minimum of the potential energy curve, obtained by extrapolating the average bond lengths of a series of vibrational levels back to the minimum of the potential curve). Here is a list of the bond lengths first measure