SOUTHWESTERN UNIVERSITY COLLEGE OF ARTS AND SCIENCES DEPARTMENT OF CHEMISTRY CHEM1 Assignment Multiple Choices Write the letter of the best/correct answer in the space provided 1) Which group in the periodic table contains only nonmetals? 2) Horizontal rows of the periodic table are known as A) 1A B) 6A C) 2B D) 2A E) 8A 3) Elements in Group 1A are known as the A) periods B) groups C) metalloids D) metals E) nonmetals 4) Elements in Group 6A are known as the A) chalcogens B) alkaline earth metals C) alkali metals D) halogens E) noble gases 5) Elements in Group 8A are known as the A) alkali metals B) chalcogens C) alkaline earth metals D) halogens E) noble gases 6) Lithium is a and magnesium is a A) halogens B) alkali metals C) alkaline earth metals D) chalcogens E) noble gases 7) Calcium is a and silver is a A) nonmetal, metal B) nonmetal, nonmetal C) metal, metal D) metal, metalloid E) metalloid, metalloid 8) When a metal and a nonmetal react, the tends to lose electrons and the tends to gain electrons A) nonmetal, metal B) metal, metal C) metalloid, metal D) metal, metalloid E) nonmetal, metalloid 9) In the periodic table, the elements are arranged in A) alphabetical order B) order of increasing atomic number C) order of increasing metallic properties D) order of increasing neutron content E) reverse alphabetical order 11) Which one of the following is a nonmetal? A) W B) Sr C) Os D) Ir E) Br A) metal, metal B) nonmetal, nonmetal C) metal, nonmetal D) nonmetal, metal E) None of the above, these elements share electrons 10) Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties? A) H, Li B) Cs, Ba C) Ca, Sr D) Ga, Ge E) C, O 12) Which of the following elements is a metaloid? A) B B) C C) Ga D) Se E) In 13) Which pair of elements below should be the most similar in chemical properties? 14) An element that appears in the lower left corner of the periodic table is A) C and O B) B and As C) I and Br D) K and Kr E) Cs and He 15) Which one of the following does not occur as diatomic molecules in elemental form? A) either a metal or metalloid B) definitely a metal C) either a metalloid or a non-metal D) definitely a non-metal E) definitely a metalloid 16) Elements in the modern version of the periodic table are arranged in order of increasing A) oxygen B) nitrogen C) sulfur D) hydrogen E) bromine 17) In 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) decreases, decreasingly, increases B) increases, increasingly, decreases C) increases, increasingly, increases D) decreases, increasingly, increases E) decreases, increasingly, decreases 19) The only noble gas that does not have the ns np valence electron configuration is A) oxidation number B) atomic mass C) average atomic mass D) atomic number E) number of isotopes 18) Most of the elements on the periodic table are A) gases B) nonmetals C) metalloids D) liquids E) metals 20) Which nonmetal exists as a diatomic solid? A) bromine B) antimony C) phosphorus D) iodine E) boron A) radon B) neon C) helium D) krypton E) All noble gases have the ns np valence electron configuration 21) In which set of elements would all members be expected to have very similar chemical properties? 22) Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar? A) O, S, Se B) N, O, F C) Na, Mg, K D) S, Se, Si E) Ne, Na, Mg 23) Which one of the following atoms has the largest radius? A) Mg > Na > P > Si > Ar B) Ar > Si > P > Na > Mg C) Si > P > Ar > Na > Mg D) Na > Mg > Si > P > Ar E) Ar > P > Si > Mg > Na 24) Which one of the following has the smallest radius? A) O B) F C) S D) Cl E) Ne A) Na B) Cl C) Fe D) P E) Br 25) Which one of the following elements has the largest atomic radius? 26) Which one of the following elements has the largest atomic radius? A) Se B) As C) S D) Sb E) Te 27) Which of the following correctly lists the five atoms in order of increasing size (smallest to largest)? A) O B) F C) Al D) P E) B 28) Of the choices below, which gives the order for first ionization energies? A) F < K < Ge < Br < Rb B) F < Ge < Br < K < Rb C) F < K < Br < Ge < Rb D) F < Br < Ge < K < Rb E) F < Br < Ge < Rb < K 29) Of the following elements, which has the largest first ionization energy? A) Na B) Al C) Se D) Cl E) Br 31) Nonmetals can be at room temperature A) solid, liquid, or gas B) solid or liquid C) solid only D) liquid only E) liquid or gas 33) This element is more reactive than lithium and magnesium but less reactive than potassium This element is A) Na B) Rb C) Ca D) Be E) Fr A) Cl > S > Al B) Ar > Cl > S C) Al > Si > S D) Cl > S > Al E) S > Si > Cl > > > > > Ar Si Cl Si Al > > > > > Si Al Ar Ar Ar 30) Which one of the following is a metalloid? A) Ge B) S C) Br D) Pb E) C 32) When two elements combine to form a compound, the greater the difference in metallic character between the two elements, the greater the likelihood that the compound will be A) a gas at room temperature B) a solid at room temperature C) metallic D) nonmetallic E) a liquid at room temperature 34) is a unique element and does not truly belong to any family A) Nitrogen B) Radium C) Hydrogen D) Uranium E) Helium NOTHING FOLLOWS -