[試題] 98上林泱蔚普通化學甲第一次期中考

看板NTU-Exam作者darkbreath (小翼)時間14年前 (2009/10/26 19:10)推噓15(15推 0噓 0→)

留言15則, 9人參與討論串1/1

課程名稱︰普通化學甲課程性質︰必修課程教師︰林泱蔚開課學院：開課系所︰大氣系、農化系、地質系考試日期（年月日）︰2009.10.23 考試時限（分鐘）：110分鐘是否需發放獎勵金：是，謝謝（如未明確表示，則不予發放）試題 : I. 名詞解釋 34% 1. Accuracy,Precision and reproducibility 6% 2. Extensive property and intensive property 4% 3. Alpha particle,Beta particle,Gamma rays and X ray 4% 4. Allotrope and Isotope 4% 5. Electron affinity and Ionization energy 4% 6. Shielding effect and Effective nuclear charge 4% 7. Paramagnetic and Diamagnetic 4% 8. Atomic orbit and Atomic orbital 4% II. 填充題 44% 1. Fill the blanks in the following table ┌────┬────┬─────┬──────────────┐ │Cation │Anion │ Formula │ Name │ ├────┼────┼─────┼──────────────┤ │ │ │ Ag2CO3 │ │ ├────┼────┼─────┼──────────────┤ │ │ │ │ Potassium hypochlorite │ ├────┼────┼─────┼──────────────┤ │ Fe2+ │ Cl- │ │ │ ├────┼────┼─────┼──────────────┤ │ │ │ │disodium ammonium phosphate │ ├────┼────┼─────┼──────────────┤ │ │ │NaClO3 │ │ └────┴────┴─────┴──────────────┘ 2. Fill the blanks in the following table ┌─────┬────┬─────┬──────┐ │symbol │ 84 │ 24 2+ │ 12 4- │ │ │ Sr │ Mg │ C │ │ │ 38 │ 12 │ 6 │ ├─────┼────┼─────┼──────┤ │Protons │ │ │ │ ├─────┼────┼─────┼──────┤ │Neutrons │ │ │ │ ├─────┼────┼─────┼──────┤ │electrons │ │ │ │ └─────┴────┴─────┴──────┘ 3. The mineral pyrolusite is a compound of manganese-55 and oxygen-16.If 63% of the mass of pyrolusite is due to manganese,the empirical formula of pyrolusite is ____________ A. MnO B.Mn2O C.Mn2O2 D.MnO2 E.none of these 4. An element with the general electron configuration for its outermost electrons of ns2np1 would be in which element group __________ - 2- + 3+ 5. Which of these species make an isoelectronic pair:Cl ,O ,F,Ca ,Fe _____ 6. Which one of these ions has the largest radius ________ - + 2- + 2- A.Cl B.K C.S D.Na E.O 7. In a surprisingly large number of their properties, beryllium resembles aluminum and boron resembles silicon. Such a relationship is called ______ 8. The second ionization energy of Mg is _______ than its first ionization energy,and is ______ than the second ionization energy of Na. 9. Which one of the following sets of quantum numbers is not possible _______ ┌────────────────────────────┐ │ n l ml ms │ │ │ │ Row1 4 3 -2 +1/2 │ │ Row2 3 0 1 -1/2 │ │ Row3 3 0 0 +1/2 │ │ Row4 2 1 1 -1/2 │ │ Row5 2 0 0 +1/2 │ │ │ └────────────────────────────┘ 10. The orbital diagram for a ground-state nitrogen atom is _________ ┌────────────────────────────┐ │ 1s 2s 2p │ │ │ │ Row1 ↑↓ ↑↓ ↑ ↑ ↑ │ │ ￣￣￣￣￣ │ │ Row2 ↑↓ ↑↓ ↑↓ ↑ │ │ ￣￣￣￣￣ │ │ Row3 ↑↓ ↑ ↑ ↑ ↑ │ │ ￣￣￣￣￣ │ │ Row4 ↑↓ ↑↓ ↑↓ ↑ ↑ │ │ ￣￣￣￣￣ │ │ │ └────────────────────────────┘ 11. Which element will display an unusually large jump in ionization energy values between I3 and I4,its third and fourth ionization energues _______ A.Na B.Mg C.Al D.Si E.P 12. A ground-state atom of iron has _______ unpaired electrons and is _______ (paramagnetic or diamagnetic) 13. The colors of the visible spectrum are red,orange,yellow,green,blue,and violet.Of these colors,_______ has the most energy. 14. Arrange the following atoms in oder of increasing first ionization energy: Na,Cl,Al,S,and Cs _________ 15. Arrange the following atoms in oder of decreasing atomic radius:Na,Al,P,Cl ,and Mg 16. The law of octaves states that every eight element has similar properties when arranged in oder of increasing _______ 2- 17. Write the ground-state electron configuration for O 18. Since zirconium is a metal,ZrO2 is expected to be a/an _______ oxide.Since arsenic is a nonmetal,As2O3 is expected to be a/an _______ oxide. 19. Which of the following elements has the greatesst metallic character:Br,F, Ge,Mn and Sc _______ 20. Which two electron configurations represent elements that would have similar chemical properties:_______ 2 2 4 2 2 5 2 5 2 10 5 A.1s 2s 2p B.1s 2s 2p C.[Ar]4s 3d D.[Ar]4s 3d 4p III. 計算題 31% 1. A ruby laser produces radiation of wavelength 63.3 nm in pulses whose duration is 1.00*10^-9 s.(a)If the laser produces 0.376 J of energy per pulse,how many photons are produced in each pulse?(b)Caculate the power (in watts) delivered by the laser per pulse (1W=1J/s). 6% 2. A photovoltaic cell converts light into electrical energy.Suppose a certain photovoltic cell is only 63.5% efficient, in other words,that 635% of the light energy is ultimately recovered.If the energy output of this cell is uded to heat water,how many 520 nm photons must be absorbed by the photovoltaic cell in order to heat 10.0 g of water from 20.0。C to 30.0‧C? 3. Caculate the energy (in joule) and the wavelength (in nm) required to excite a hydrogen atom by causing an electronic transition from the n=1 to the n=4 principal energy level. 5% 4. A cube made of platinum (Pt) has an edge length of 1.0 cm.(a) Caculate the number of Pt atoms in the cube,(b) Atoms are spherical in shape.Therefore, the Pt atoms in the cube is taken up by Pt atoms,calculate the radius in picometers of a Pt atom.The density of Pt is 21.45 g/cm^3 and the mass of a single Pt atom is 3.240*10^-22 g. [The volime of a sphere of radius r is (4/3)πr^3] 10% 5. The wave function for the 1s orbital in the hygrogen atom is 1 Ψ1s = ── e^-r,where r is the value of the radius of the Bohr orbit √π radius a0,equal to 0.0529 nm.What is the distance from nucleus having the maximum of Radial probability? 5% IV. 說明題 16% 1. Experimentally we find that the 4s orbital lies at a lower energy level than the 3d orbital in a many electron atom.Why? 5% 2 5 2+ 2. Consider manganese,whose electron configure is [Ar]4s 3d .When the Mn ion is formed,we might expect the two electron to be removeed from the 3d 2 3 orbitals to yield [Ar]4s 3d .Is it true?Ifit is wrong,what is its correct answer and why 5% 3. Explain why alkali metals have a greater affinity for electrons than alkaline earth metals. 3% 4. In general,ionization energy increases from left to right across a given period.Aliminum,however,has a lower ionization energy than magnesium. Explain. 3% -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.112.242.233

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alex514103

10/26 22:32, , 1^F

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purplishfish

10/26 22:33, , 2^F

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u19901006

10/27 20:18, , 3^F

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