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109年 - 109亞洲大學_學士後招生_獸醫學系︰化學(含普通化學、有機化學)#100887
> 試題詳解
13. Which of the following Lewis structures is incorrect?
(A)
(B)
(C)
(D)
答案：
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統計：
尚無統計資料
其他試題
9. How many valence electrons does an atom of C have? (A) 1(B) 4(C) 2(D) 3
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10. Place the following in order of increasing radius. Ca2⁺ S2⁻ Cl⁻ (A) Ca2⁺ ＜ Cl⁻＜ S2⁻(B) Cl⁻ ＜ Ca2⁺ ＜ S2⁻(C) S2⁻ ＜ Cl⁻ ＜ Ca2⁺ (D) Ca2⁺ ＜ S2⁻＜ Cl⁻
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11. Which of the elements listed below would most likely form a polar covalent bond when bonded to oxygen? (A) Mg(B) H(C) Al(D) O
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12. Assuming the octet rule is obeyed, how many covalent bonds will an oxygen atom form to give a formal charge of zero? (A) 0(B) 1(C) 2(D) 3
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14. In the best Lewis structure for NO +, what is the formal charge on the N atom? (A) -1(B) 0(C) +1(D) +2
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15. Which of the elements listed below is most likely to exhibit an expanded octet in its compounds? (A) O(B) S(C) Na(D) C
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16. Give the number of lone pairs around the central atom and the molecular geometry of SCl2. (A) 0 lone pairs, linear(B) 1 lone pair, bent(C) 2 lone pairs, bent (D) 3 lone pairs, bent
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17. Use VSEPR theory to predict the geometry of the BF3 molecule. (A) linear(B) bent(C) trigonal planar(D) trigonal pyramidal
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18. Which one of the following molecules has tetrahedral geometry? (A) XeF4(B) BF3(C) AsF5(D) CF4
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19. Which one of the following molecules has a non-zero dipole moment? (A) BeCl2(B) Br2(C) BF3(D) IBr
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