1. ______ is a representative element. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1. 22 Ti 2. 42 Mo 3. 81 Tl 4. 24 Cr 5. 92 U

2. What would be the outer electron configuration of group IVA (C, Si, Ge,...)? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.ns 2 nd 2 np 0 2.ns 2 np 4 3.ns 0 np 4 4.ns 1 np 3 5.ns 2 np 2

3. Choose the term that best describes all members of this series of elements: V, Cr, Fe, Co, Ni 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.metalloids 2.d-transition elements 3.alkaline earth metals 4.alkali metals 5.representative elements

4. Which element has the largest atomic radius? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.Mo 2.Mg 3.Ba 4.Cl 5.At

5. Which element has the lowest first ionization energy? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.Al 2.Si 3.P 4.S 5.Cl

6. Which of the following elements has the most negative electron affinity? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.Ge 2.I 3.Br 4.Se 5.K

7. Which response includes all of the following that are isoelectronic with Kr, and no other species? I. S 2- II. Ar III. K + IV. Sr 2+ V. Br - 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.I, II, and III 2.II and IV 3.III and IV 4.IV and V 5.I, IV, and V

8. Consider the following atoms and ions: Na, Na +, Mg, Mg 2+, O, O 2-, F, F -. Which one of the following groups includes only isoelectronic species? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.Na, Mg, O, F 2.Na, Na +, Mg, Mg 2+ 3.O, O 2-, F, F - 4.Na +, Mg 2+, O2-, F- 5.none of these

9. Which ion has the largest radius? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.P 3- 2.S 2- 3.Cl - 4.N 3- 5.F -

10. Which ion has the smallest radius? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.K + 2.Rb + 3.Ca2 + 4.Sr2 + 5.Ba2 +

11. Which one of the following properties is based on the attraction of an atom for electrons in a chemical bond? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.binding energy 2.mass defect 3.electron affinity 4.ionization energy 5.electronegativity

12. Which element has the lowest electronegativity? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.Be 2.Ba 3.Ga 4.Tl 5.I

13. Which of these comparisons of electronegativities is (are) correct? I. O > N II. S > P III. Rb > Li IV. Br > Cl 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.I and IV 2.I and III 3.I and II 4.II and III 5.III and IV

14. Which one of the following hydrides is acidic? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.RbH 2.SrH 2 3.H 2 S 4.NaH 5.NH 3

15. The principal product of the reaction of iron, Fe, with a limited amount of oxygen is I, while with an excess of oxygen it is II. I / II 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.Fe 3 O 2 / FeO 2.Fe 2 O 3 / FeO 3.FeO / Fe 3 O 2 4.FeO / Fe 3 O 4 5.FeO / Fe 2 O 3

16. The most common oxidation states of nonmetals do not include _______. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.zero 2.the periodic group number of the nonmetal 3.the periodic group number of the nonmetal minus two 4.the periodic group number of the nonmetal minus eight 5.the negative of the periodic group number of the nonmetal

17. The most common oxidation states of selenium are +4 and +6 in molecular oxides. What is the formula for the product of the reaction of selenium with a limited amount of oxygen? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.SeO 2.SeO 2 3.SeO 3 4.Se 2 O 3 5.Se 3 O 4

18. The acid for which N 2 O 3 can be considered the anhydride is __________. 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.H 2 N 2 O 2 2.HNO 2 3.HNO 3 4.H 2 NO 3 5.HN 3

19. Write the balanced formula unit equation for the reaction of arsenic, As 4, heated with a limited amount of oxygen (The molecular formula for the product is twice the empirical formula). What is the sum of the coefficients? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.2 2.8 3.3 4.4 5.5

20. Write the balanced formula unit equation for the reaction of tetraphosphorus decoxide with excess water. What is the sum of the coefficients? 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.10 2.7 3.9 4.11 5.5