TrendsReview

1. LabeltheAlkaliMetals,AlkaliEarthMetals,Halogens,TransitionMetals,NobleGases,andOtherMetalsonthefollowingperiodictable.

2. Horizontalrowsontheperiodictablearecalledwhat?Whatareverticalcolumnscalled?

3. Whatdowecallatomswithapositivecharge?Howaboutatomswithanegativecharge?

4. Whatisanatomstendencytoattractelectronswhencombinedwithanotherelement?

5. Definewhatavalenceelectronis.

A

BC D

E

F

6. Whatistheamountofenergyrequiredtoremoveandelectronfromanatom?

7. Whatisthepositivechargefeltbyelectronsthat’sassociatedwiththenucleus?

8. Whatdowecallitwhenelectronsofalowerenergylevelprotectelectronsinahigherenergylevelfromthenucleus?

9. GiventhetwoelementBeandN,whichonehasthegreateratomicradiusandwhy?

10. GiventhetwoelementsFandBr,whichonehasthegreaterelectronegativityandwhy?

11. GiventhetwoelementsKandCs,whichonehasagreatershieldingandwhy?

12. GiventhetwoelementsAlandP,whichonehasthegreaterionizationenergyandwhy?

13. Asatomicradiiincreasesacrossaperiodwhathappenstotheothertrends?Couldyougraphthis?

14. Drawthedirectionofeachgroupandperiodtrendandindicatewhetheritisincreasingordecreasing.

Honors:Ionizationenergyistheenergyrequiredtoremoveanelectronfromanatom.Explainhowyouthinkthiswouldrelatetotheamountofenergyneededtoremoveasecondelectron.Doyouthinkitwouldbehardertoremoveandelectronfroma2porbitalor2sorbital?Explainyourreasoning.