Answer:
The sodium atom, whose electronic configuration is 2, 8, 1; has in its last layer an electron and the previous layer formed by an byte. Therefore, has a tendency to lose an electron to acquire the electronic noble gas structure, forming the ion Na+.
Step-by-step explanation:
Atoms can become ions by winning or losing electrons. All atoms of a particular element have the same number of positively charged protons within the nucleus. Around the nucleus is placed an equal number of negatively charged electrons. While the number of protons remains unchanged in an element, atoms can gain and lose electrons to form ions. The tendency by which an atom gains or loses an electron is described by the ionizing energy of the atom and the affinity of electrons.