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2 1) Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar? I A)Si > P > Ar > Na > Mg B)Ar > P > Si > Mg > Na C)Ar > Si > P > Na> Mg D)Na > Mg > Si > P > Ar E)Mg > Na > P > Si > Ar 2)ofthefollowingelements,-hasthemostnegativeelectronaffinity. A)Al B)Cl C)Si D)P E)B 3) M/hich of the following is not a characteristic of metals? A) ductility B) low ionization energies C) malleability D) acidic oxides E) These are all characteristics of metals. 4) The reaction of a metal with a nonmetal produces a(n) _. A) oxide B) acid C) salt D) base E) hydroxide 5) The atomic radius of main-group elements generally increases down a group because A) effective nuclear charge decreases down a group B) effective nuclear charge increases down a group C) effective nuclear charge zigzags down a group D) the principal quantum number of the valence orbitals increases E) both effective nuclear charge increases down a group and the principal quantum number of the valence orbitals increases Consider the following electron configurations to answer the questions that follow: (i) r& zj 2p6 sl (ii) 1s2 2& Zp6 3tZ- (iii) 1s2 2&Zp5 3s2 3p1 (iv) lj 2& zp6 3& q4 (v) 1* 2&zp6 3J eps 6)Theelectronconfigurationbelongingtotheatomwiththehighestsecondionizationenergyis-. A) (i) B) (ii) c) (iii) D) (iv) E) (v) 7) The electron configuration of the atom that is expected to have a positive electron affinity is =-. A) (i) B) (ii) c) (iii) D) (iv) E) (v) 8) The electron configuration that belongs to the atom with the lowest second ionization energy is A) (i) B) (ii) c) (iii) D) (iv) E) (") 9) All of the followine are ionic comoounds excedt A) Na2SO4 B) NaCl C) SiO2 D) Li3N E) K2o 10) Which nonmetal exists as a diatomic solid? A) iodine B) bromine C) boron D) antimony E) phosphorus A-1

3 11) Of the following elements, has the most negative electron affinity. A)Br B)Cl C)s D)r hlde- E) S 12) Oxides of most nonmetals combine with water to form A) hydrogen gas B) a base C) water D) an acid E) water and a salt 13) which equation correctly represents the first ionization of phosphorus? A)P(g) + e- + P-(g) B)P*(d + e- * P(g) C)P(g) * P+(g) + e- D)P-(g) * P(g) + e- E)P(g) + P-(g) * e- 14) Of the following metals, exhibits multiple oxidation states. A)Na B)At qv D)Cs E)Ca 15) The substance, is always produced when an active metal reacts with water. A) H2o B) cq C) Hz D) e E) NaoH 15) Chlorine is much more apt to exist as an anion than is sodium. This is because A) drlorine has a greater electron affinity than sodium does B) chlorine is a gas and sodium is a solid C) chlorine has a greater ionization energy than sodium does D) chlorine is more metallic than sodium E) drlorine isbigger than sodium ln the lowest first ionization energies of the groups listed. A) Noble gases B) Transition elements C) Halogens D) Alkaline earth metals E) Alkali metals -have 18) Element X reacts with chlorine to form a compound with the formula XCl2. The oxide of element X is basic. ElementXis ---. A)P B) Rb c) Ar D)H E) Ca 19) Elements in the modem version of the periodic table are arranged in order of increasing A) atomicnumber B) number of isotopes C) oxidation number D) average atomic mass E) atomic mass A-2

4 20) Which of the following is an isoelectronic series? A) $ Cl, Ar, K B) d-, P-,ft\e, Na+ c) si2-, P2-,9-,c12- D) F-, Cl-,Br-, - E) B5-, Si4-, As3-, T4- frts 21) Which of the following generalizations cannot be made with regard to reactions of alkali metals? (The symbol M represents Erny one of the alkali metals.) A) 2M (s) + S (s) * MzS (s) B) 2M(s) + 2H2O(l) * 2MOH(aq) * HzE) C) M (s) + oz (g) * MQ (s) D) 2M (s) + Cl2 (g) * 2MCl (s) E) 2M (s) + H2 (g) * zmh (s) 22) \alhich element would be expected to have chemical and physical properties closest to those of fluorine? A)Fe B)o C)Cl D)S E)Ne 23) The ion with the smallest diameter is A) F- B) Br- c) cl- D) I- E) d- 2qUthefollowinge1ements,-hasthemostnegativeelectronaffinity. A)S B)o -. C)Na D)K E)B 25) Element M reacts with chlorine to form a compound with the formula MCl2. Element M is more reactive than magnesiumandhasasmallerradiusthanbarium.thiselementis-' A)Sr B)Be C)Ra D)K E)Na 26)Thefirstionizationenergiesoftheelements-asyougofromlefttorightacroSsaperiodofthe periodic table, and as you go from the bottom to the top of a group in the table. A) increase, increase B) increase, decrease C) decrease, increase D) decrease, decrease E) are completely unpredictable 27) \A/hich of the following has the largest second ionization energy? A) Se B) Ca C) Ge D) Ga E)K 28) \Mhat is the coefficient of H2O when the following equation is completed and balanced? Ba (s) + H2O (l) - A)1 B)2 c)3 D)5 E) Ba(s) does not react with H2O (l). A-3

5 29) which of the following correctly lists the five atoms in order of increasing size (smallest to largest)? A)F < S < O < Mg < Ba B)O < F < S < Mg < Ba C)F < O < S < Ba < Mg D)O < F < S < Ba < Mg E)F < O < S < Mg < Ba glue 30) ll/hich ion below has the largest radius? A) Br- B) 6+ c) cl- D) Na+ E) F- 31) Atomic radius generally increases as we move A) down a group and from right to left across a period B) up a group and from left to right across a period C) up a group and from right to left across a period D) down a group; the period position has no effect E) down a group and from left to right across a period 32) Nonmetals can be _ at room temperature. A) solid only B) solid liq"i4 or gas C) liquid only D) liquid or gas E) solid or liquid 33) of the following atoms, which has the largest first ionization energy? A)o B)Br C)C D)p E)I 34) Of the following specieq --- has the largest radius. A) R6+ B) Ar C) S12+ D) Br- 35) is isoelectronic with argon and is isoelectronic -=.- with neon. A) Ne-, K1+ B) Cl-, Cl+ c) cl-, F- D) F+, F- E) Kr E) Ne-,Ar+ 36) Oxides of the active metals combine with acid to form A) hydrogen - gas B) metalhydroxides C) oxygen gas D) metal hydrides E) water and a salt 37)Ct2(g) + H2O(l) * A) 2HCl(aq)* Q- (g) B) 2 Cl- (aq) + Hzo 0) C) Cl2 (aq) + H2o (l) D) HCI (aq) * HoCl (aq) E)2Hcl(aq) " QG) A-4

6 Ptus 38) Na reacts with element X to form an ionic compound with the formula Na3X. Ca will react with X to form A) CaX2 B) CaX C) Ca3X2 D) Ca3X E) Ca2X3 39) In which of the following atoms is the 3s orbital closest to the nucleus? A) At B)I C) Br D) Cl E) The 3s orbitals are the same distance from the nucleus in all of these atoms. 40) In which of the following atoms is the 2s orbital closest to the nucleus? A)S B) Si c) cl D)P E) The 2s orbitals are the same distance from the nucleus in all of these atoms. 41) Of the choices below, which gives the order for first ionization energies? A)Cl > S > Al > Ar > Si B)Ar > Cl > S > Si > Al C)S>Si>Cl>Al>Ar D)Al > Si > S > Cl > Ar E)Cl > S > Al > Si > Ar 42) AU the elements in group 8A are gases at room temperature. Of all the groups in the periodic table, only group contains examples of elements that are gas, liquid, and solid at room temperaturc. A)7A B) 24. c) 6A D) 1A E) 5A 43) il/hich of the following correctly represents the sqcond ionization of aluminum? A) At- (g) * e- * Al2- (g) B) at+ (g) * e- * A1(g) C) al+ (g) (g) * e- D) Al+ (g) * e- * al2+ 1*1 E) Al (g) * Al+ (g) * e- t14) Which one of the following atoms has the largest radius? A) Cl B) Ne C)F D)O E)S 45)2F2(g) * 2H2o(1) * A)2w2(aq) * 2OH* (aq) B) 2 HF (aq) + 2 HFo (aq) C) 4 HF (aq) * (aq) D) 2 F- (aq) * 2 H+ (aq) + H2O2 (aq) E) 4 Hr (aq) * oz (g) 46) In which set of elements would all members be expected to have very similar chemical properties? A) Na, Mg, K B) Ne, Na MB C) N, O, F D) o, S, Se E) S, Se Si A-5

7 47) Consider the following properties of an element: (i) It is solid at room temperature. (it It easily forms an oxide when exposed to air. (iii) When it reacts with water, hydrogen gas evolves. (iv) It must be stored submerged in oil. lvhich element fits the above description the best? fuu A) sodium B) sulfur C) copper D) mercury E) magnesium 48) tr general, as you go across a period in the periodic table from left to right: (1) the atomic radius ; (2) the electron affinity becomes negative; and (3) the first ionization energy A) increaseg increasingly, increases B) decreaseg increasingly, increases C) decreases, increasingly, decreases D) increases, increasingly, decreases E) decreases, decreasingly, increases 49) Which one of the following has the smallest radius? A) Na B) Fe c) cr D) Br E)P 50)-iscreditedwithdeve1opingtheconceptofatomicnumbers. A) Henry Moseley B) Emest Rutherford C) Michael Faraday D) Lothar Meyer E) Dmitri Mendeleev A-6