Electron Configuration Of Sodium And Chlorine. 1s2 2s2 2p63s1 atomic radius: The second (reverse) definition is that electron affinity is the energy required to remove an electron from a singly charged gaseous negative ion.
The energy required to transfer an electron from a sodium atom to a chlorine atom (the difference of the 1st ionization energy of sodium and the electron affinity of chlorine) is small: The second (reverse) definition is that electron affinity is the energy required to remove an electron from a singly charged gaseous negative ion. When sodium bonds with chlorine, what is the chlorine electron configuration like?
Both sodium and chlorine atoms need to obtain a stable electron configuration, that is, a complete outer shell of eight electrons.
Atomic number of chlorine(cl) atom is 17. But then it could also be a halogen. Thus, its electron configuration is: Chlorine, with seven valence electrons, can gain one electron to attain the configuration of argon.