Periodic Trends

3. A positively or negatively charged atom.
4. Ions that become smaller as each addional electron is removed
5. Ioniztion energy ___ across a period.
6. Group number that has an effective nuclear charge of +7.
8. Size of an atom
10. Inner layers of electrons help reduce the nucleus's pull on valence electrons.
13. Out of Ga, Br, and K, the element with the largest atomic radius.
15. Ability to attract electrons while bonding
16. Name of the group that forms 1- ions.
17. Out of Si, P, and O, the element that is most nonmetallic.
18. Energy lost when an atom gains an electron.
19. The element with the largest atomic radius.
23. Name of the group that forms 2+ ions.
25. Element in the fourth period that has the lowest first ionization energy.

1. Ions that become larger as each additional electron is added.
2. Electron affinity ___ down a group.
5. Energy required to remove an electron.
7. Out of Sr, Ba, and Mg, the element with the least elecronegativity.
9. Element in period three that has the highest "jump" in ionization energy between the 3rd and 4th ioniztion energies.
11. Out of I, P, and As, it has the most shielding electrons.
12. the most electronegative element.
14. Element in period two that tends to make an ion with a charge of 3-.
15. The force felt by the valence electrons from the nucleus.
20. Elements tend to form compounds so that their electron configurations look like those of this group.
21. Out of F, At, and Br, the element with the least affinity fo electrons.
22. Name of the group that forms 1+ ions.
24. Size of an ion