6Li has 3 protons and 3 neutrons.
6Li is a stable isotope.
The mass excess of 6Li is 14086.88044 with an uncertainty of ±0.00144.
The mass was measured using a Penning Trap and the related equations include:
Influence Equations
100% 6Li2-C 1 Reference 1. T.P. Heavner, S.R. Jefferts, G.H. Dunn et al. (1998), Precision measurement of the atomic mass of /sup 6/Li using a Penning ion trap mass spectrometer IEEE https://ieeexplore.ieee.org/document/699804