4. Atomic size decreases as you go down a Group. |
4. Atomic size increases as you go down a Group. |
5. Atomic size increases as you go across a Period. Since the nuclear charge is increasing causing a greater pull to valence electrons (greater CF) the valence electron are closer (since they are on the outside of atom, they determine size of atom). |
5. Atomic size decreases as you go across a Period. Since the nuclear charge is increasing causing a greater pull to valence electrons (greater CF) the valence electron are closer (since they are on the outside of atom, they determine size of atom). |