Which elements will most likely lose electrons to get an octet?

Elements that are most likely to lose electrons to achieve an octet are typically found in Groups 1 and 2 of the Periodic Table, such as alkali metals (like lithium, sodium, and potassium) and alkaline earth metals (like magnesium and calcium). These elements have one or two valence electrons, respectively, and they tend to lose these electrons to attain a stable electron configuration similar to that of noble gases. By losing electrons, they can achieve a full outer shell, which is energetically favorable.