587 



TABLE 625A.— MOLECULAR CONSTANTS FOR THE GROUND STATES OF 

 DIATOMIC MOLECULES 



The following symbols are used: ( ) Constants and symbols in parentheses are uncertain or of low 

 accuracy. [ ] Constants in brackets refer to the lowest vibrational levels rather than to the equilibrium 

 position. Such a value under u>« is the first vibrational quantum A Gi/ a = G (1) — G (0) = a>« — 

 2wtxe* . . . ; under r« it is the effective value r in the lowest vibrational level (v = 0), that is, it has 

 been obtained from B rather than Be. * An asterisk in the column "Type of state" indicates that it is 

 doubtful whether the state whose constants are given is the ground state of the molecule, t A dagger 

 after a value under r« indicates that it has been obtained from electron diffraction rather than from the 

 spectrum of the molecule. { In a few cases several values of the dissociation energy are compatible with 

 the available data. These values are grouped together by braces. 



SMITHSONIAN PHYSICAL TABLES 



