89. Alkali metals (Group 1) are different with alkaline earth metals (Group 2). Which of the following statements is correct?
(A) Alkali metals have larger ionic radii.
(B) Alkali metals have higher melting points.
(C) Alkali metals have greater first ionization energies.
(D) Alkali metals have greater densities.
(E) Alkali metals have greater electronegativity.

85. What are the factors influencing the infrared frequency of the CX vibration for CH3X? I. mass of X II. strength of the CX bond III. type of CX vibration (stretch or bend) (A) I (B) II (C) I and II (D) II and III (E) I, II, and III

86. The radioactive isotope 247Bk (Z = 97) decays by a series of α-particle and β-particle productions, taking 247Bk through many transformations to end up as 207Pb (Z = 82). In the complete decay series, how many α particles and β particles are produced, respectively? (A) 10, 8 (B) 10, 5 (C) 10, 2 (D) 8, 8 (E) 5, 8

87. Consider the galvanic cell shown below (the contents of each half-cell are written beneath each compartment). The standard reduction potentials are as follows: Which of the following statements about this cell is incorrect? (A) The value of E° for this cell is 1.82 V (B) Electrons flow from the Cr electrode to the Pt electrode. (C) Reduction occurs at the Cr electrode. (D) The cell is not at standard conditions. (E) The value of E for this cell at 25°C should larger than 1.82 V.

88. A galvanic cell consists of two half-reactions:What is the maximum work can be obtained from this cell at standard condition? (Faraday constant = 96500 C mol‒1 ) (A) 173.7 kJ (B) 347.4 kJ (C) 569.4 kJ (D) 113.9 kJ (E) None of the above.

90. The partial pressure of CO2(g) is 0.22 atm and that of CO(g) is 0.44 atm in a mixture of the two gases at 25ºC. What is the mass fraction of CO2 in the mixture? (atomic weight: C = 12 g/mol, O = 16 g/mol) (A) 44% (B) 56% (C) 33.3% (D) 66.7% (E) 50%

1. 下列化合物中，何者的臨界溫度(critical temperature)最高？ (A) CBr4 (B) CCl4 (C) CH4 (D) H2

2. 在賈凡尼電池(galvanic cell)中，Al(s) ǀ Al3+(aq, 1.0 M) ǀǀ Cu2+(aq, 1.0 M) ǀ Cu(s)。下面何者會增加 電池的電位(cell potential)？ (A) 只有 I (B) 只有 II (C) 只有 III (D) 只有 I 和 III 

 3. 核磁共振光譜儀無法測量下列哪種原子核？(A)14N (B) 2 H (C) 32S (D) 31P

 4. 下列電子組態何者代表激發態的氧原子？ (A) 1s2 2s2 2p2(B) 1s2 2s2 2p2 3s2(C) 1s2 2s2 2p1(D) 1s2 2s2 2p4

5. 根據分子軌域理論預測氧氣(O2)具有順磁性。其最佳之理由為何？ (A) 氧氣的鍵級(bond order)等於 2 (B) 鍵結軌域(bonding orbitals)中的電子數大於反鍵結軌域(antibonding orbitals)中的電子數 (C) π2p 分子軌域的能量高於σ2p 分子軌域的能量 (D) 氧氣的分子軌域中有兩個未成對的電子