CHEM151Take-home Q5 Key

Chemistry (MasteringChemistry Series)

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Unformatted text preview: Take‐Home Quiz #5 (DUE Friday October 10th, 2008) Name Date Score 1) Identify the element that each of the following ions is isoelectronic to. (2 points) a. F‐ Ne b. Sr2+ Kr c. Ni2+ Fe d. Mg+ Na 2) Write the full electron configurations of the following ions. (2 points) a. Br‐ 1s22s22p63s23p64s23d104p6 3) 4) 5) 6) 7) b. Cr2+ 1s22s22p63s23p64s23d2 c. O‐ 1s22s22p5 d. Si2+ 1s22s22p63s2 In each pair, which is larger? (2 points) a. K or Rb b. K+ or Br‐ c. Rb+ or Sr2+ d. O2‐ or S2‐ Rank the following in increasing order of first ionization energy. (1/2 point) a. Ar, K, P K<P<Ar Rank the following in increasing order of electron affinity. (1/2 point) a. Cl, Na, Si Na<Si<Cl Rank the following in increasing order of electronegativity. (1/2 point) a. S, F, Sr Sr<S<F Rank the following in increasing order of metallic behavior. (1/2 point) a. Cu, Br, Sr Br<Cu<Sr 8) Which of the following has larger lattice energy? Why? (1 point) a. MgO or KBr Bigger charges b. RbI or KBr Smaller Atoms 9) Metals tend to react with water to form_Bases_, while nonmetals tend to react with water to form_______Acids______. (1/2 point) 10) List two characteristics of metals. (1/2 point) Tends to give electrons Larger densities Usually solids Good Conductors Larger Atoms ...
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