8. Choose the valence orbital diagram that represents the Si.
(A)
(B)
(C)
(D)
(E)

1. Which of the following statements is FALSE? (A) Halogens are very reactive elements. (B) The alkali metals are fairly unreactive. (C) Sulfur is a main group element. (D) Noble gases do not usually form ions. (E) Zn is a transition metal.

2. Write the name for (SO4)2. Remember that Sn forms several ions. (A) tin (I) sulfite (B) tin (IV) sulfate (C) tin sulfide (D) tin (II) sulfite (E) tin (I) sulfate

3. What is the chemical formula for magnesium hydride? (A)MgH2 (B) MgOH (C) MgH (D) MgOH2(E) Mg(OH)2

4. Which of the following compounds is soluble in water? (A) CaS (B) MgCO3 (C) PbCl2 (D) BaSO4 (E) None of these compounds is soluble in water.

複選題5. Which of the gases in the graph below has the largest molar mass? (A) A (B) B (C) C (D) D (E) There is not enough information to determine.

複選題6. Which of the following statement is TRUE? (AB) State functions do not depend on the path taken to arrive at a particular state. (AC) DErxn can be determined using constant volume calorimetry. (AD) Energy is neither created nor destroyed, excluding nuclear reactions. (AE) Hrxn can be determined using constant pressure calorimetry. (BC) All of the above are true. (BD)一律送分

7. Which of the following statement is TRUE? (A) We can sometimes know the exact location and speed of an electron at the same time. (B) All orbitals in a given atom are roughly the same size. (C) Since electrons have mass, we must always consider them to have particle properties and never wavelike properties. (D) Atoms are roughly spherical because when all of the different shaped orbitals are overlapped, they take on a spherical shape. (E) All of the above are true.

9. Predict the charge for the most stable ion of nitrogen(A) -3(B)-2 (C) 1 (D) 0 (E) +3

複選題10. Choose the compound below that should have the highest melting point according to the ionic bonding model. (A) Srl2 (B) MgF2 (C) CaCl2 (D) SrF2 (E) SrBr2

11. Draw the Lewis structure for including any valid resonance structures. Which of the following statements is TRUE? (A) The nitrite ion contains one N-O single bond and one N=O double bond. (B) The nitrite ion contains two N-O bonds that are equivalent to 1.5 bonds. (C) The nitrite ion contains two N=Odouble bonds. (D) The nitrite ion contains two N-O single bonds. (E) None of the above are true.

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