Table 2.

Comparison of the present calculations of the EA of At to other theoretical approaches.

Method	EA(At)/eV	Ref.
CBS-DC-CCSDT(Q) + Breit + QED	2.414(16)	This work
MCDHF + SE corr.a	2.38(2)	19
MCDHF	2.416	16
DC-CCSD(T) + Breit + QED	2.412	17
MCDHF + Extrap. + Breit + QEDb	2.3729(46)	13
CBS-DC-CCSD(T)+Gaunt+QED	2.423(13)	14
Experiment	2.41578(7)	This work

^aMulticonfigurational Dirac-Fock (MCDF) results corrected using experimental data.

^bMCDF results extrapolated to complete active space limit.