Based on the information provided, the elements from Group 1 (alkali metals) and Group 17 (halogens) will likely form an ionic bond.
Evidence supporting this claim:
- The average electronegativity of Group 1 elements is 0.84, which is relatively low. This indicates that these elements do not hold onto their electrons tightly and are more willing to lose them.
- The average electronegativity of Group 17 elements is 2.99, which is significantly higher. This means these elements attract electrons more strongly and tend to gain electrons to achieve a stable electron configuration.
In an ionic bond:
- Elements from Group 1 donate electrons to elements from Group 17. The low electronegativity of the Group 1 elements allows them to easily lose their outer electrons, while the high electronegativity of the Group 17 elements allows them to gain those electrons.
To fill in the statements:
The elements form a/an ionic bond. Group 1 elements donate electrons due to their low electronegativity.
Thus, the complete statements are:
- The elements form a/an ionic bond.
- Group 1 elements donate electrons due to their low electronegativity.