Electron Affinity of Carbon and Silicon

Which has the greater affinity for an electron, Si or C and why? When thinking about the exception with F and Cl I would expect Si to have a greater electron affinity than C, but when I look at electron affinity values online I get mixed results. Some charts put C at -122kJ/mol and Si at -134kJ/mol which confirms my assumptions (<https://images.app.goo.gl/6dpbc44DjnStpaLk9>), but others place C at 153.9 and Si at 133.6 (<https://college.cengage.com/chemistry/intro/zumdahl/intro_chemistry/5e/students/protected/periodictables/pt/pt/pt_ea2.html>) (also not sure about the units for this chart, I would assume kJ/mol but it doesn't say). Which is correct and why?


