When these atoms gain electrons, they acquire a negative charge because they now possess more electrons than protons. Every ion tries to attain the stability of its' nearest noble gas..Electronic configuration of sodium is 2,8,7. For example, Group 1 element sodium (Na) has a single electron in its valence shell, with full shells of 2 and 8 electrons beneath. Sodium atoms have 11 For example, the atomic number of sodium is 11. and like it was said before you can``t figure out anything about its electron config from a yellow flame. We'll put six in the 2p orbital and then put the remaining electron in the 3s. In writing the electron configuration for sodium the first two electrons will go in the 1s orbital. The p orbital can hold up to six electrons. the electron config of sodium in its ground state is 1s2 2s2 2p6 3s1. Electron Configurations are useful for: Determining the valency of an element. The electronic configuration of an atom can be predicted from its atomic number. Predicting the properties of a group of elements (elements with similar electron configurations tend to exhibit similar properties). The nex six electrons will go in the 2p orbital. On the left, a sodium atom has 11 electrons. An ion (/ ˈ aɪ ɒ n,-ən /) is an atom or molecule that has a net electrical charge.Since the charge of the electron (considered negative by convention) is equal and opposite to that of the proton (considered positive by convention), the net charge of an ion is non-zero due to its total number of electrons being unequal to its total number of protons. Removal of this one electron leaves sodium stable: Its outermost shell now contains eight electrons, giving sodium the electron configuration of neon. But it has 11 electrons in ground state, and 10 in ionic state. For example, the atomic number of sodium is 11. Since 1s can only hold two electrons the next 2 electrons for sodium go in the 2s orbital. On the right, the sodium ion only has 10 electrons and a 1+ charge. Therefore, the abbreviated electron configuration of sodium is [Ne]3s 1 (the electron configuration of neon is 1s 2 2s 2 2p 6, which can be abbreviated to [He]2s 2 2p 6). (d) The correct electronic configuration of sodium is 2, 8, 1 (electronic configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals) Anions. Some atoms have nearly eight electrons in their valence shell and can gain additional valence electrons until they have an octet. Sodim doesn`t have a 2+ charge is has a 1+ charge so in that case its config would be 1s2 2s2 2p6.