Grade 8 Exercise (To be submitted on Feb. 6 (F) morning.)

A Periodic Table & Periodicity (7 pts.)* Which element located in Period 5 in the halogen family?* Which element that has complete valence electrons is located in Period 3?* Which element is located in Period 2 & Group VA?* Which is more capable of donating electrons, Ca or Ba?  Why?* Which has smaller atomic radius or size, N or F?  Why?

B.Naming & Formula Writing:  Write the formula, then name the compounds. (18 pts.)

IONS	Br-	O2-	N3-
Li+
Sr2+
Au3+

C.  Complete the Table (10 pts.)

Name	Formula	Type of Compounds
____________	SP5	__________
hydrogen sulfide	___________	__________
aluminum hydroxide	___________	__________
___________	HI(aq)	__________
hydronitric acid	___________	__________