FEDERAL UNIVERSITY OF PETROLUEM RESOURCES, EFFURUN, NIGERIA
DEPARTMENT OF CHEMISTRY
FIRST SEMESTER EXAMINIATION, 2014/2015 SESSION. JUNE,2015
COURSE CODE/TITLE: CHM 111; General Inorganic Chemistry – 3 Credit Units
INSTRUCTION: Answer All Questions. TIME: 1Hour 30Minutes
OPTION A1. What is the difference in terms of thermal stability between lithium trioxocarbonate
(iv) and potassium trioxocarbonate (iv).
2. What is the product of the reaction below
3M + N2 Where M is an alkaline earth metal
3. Why is aluminum resistant to attack by dilute hydrochloric acid .
4. The electronic configuration of indium, atomic number, 49 is?
5. Why are the group 3A elements said to be Lewis acids?
6. Thallium oxide has no acidic character unlike the rest of the 3A oxides. Why?
7. List four elements whose hydroxides are amphoteric in character?
8. Why are +4 ions unknown in group IV A elements?
9. Why is catenation possible in carbon?
10. State for elements that exhibit catenation apart from carbon.
11. Why does zinc lack many typical properties of Transition Metals
12. Which is the Lewis base in the chemical equation represented below? D
+ A D:A
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13 What is the colour of the ion, Cu2+13. What is responsible for magnetism?
15. State one serious disadvantage of iron as a structural material
16. What is the percentage of water in Na2CO3.5H2O
17. What is the difference in the number of electrons of Ca and Ca+18. Why is iron paramagnetic and zinc is not
19. In the extraction of aluminum, 40 tonnes of the ore, bauxite was fed into the
extraction system, instead of the normal 3.6 tonnes. What is the mass error in
Kilogram?
20. Write the chemical formula for the mineral, Trona and state the oxidation number of
oxygen atoms in a mole of the mineral.
21. What is hybridization?
22. How many unpaired electron(s) ha Na atom
23. Which two criteria did Mendeleev use to classify elements in the periodic table?
24. Give the general trend in electronegativity
25. What are the products resulting from the action of ionization energy on a gaseous
atom?
26. The hybridization of orbitals on the central atom in a molecule is sp. What is the
electron domain geometry around the central atom?
27. Which of the quantum numbers is used to characterize the shape of orbitals?
28. What is responsible for sharp decrease in ionization energy from Boron to Aluminum?
29. How many electrons exist in the penultimate shell of Zinc
30. Boron combines with metals to form …………… while Aluminum forms ……….?
31. Use chemical equations to explain the amphoteric nature of Berylium Oxide
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32. Give a simple method you can use to identify a Barium metal and Magnesium metal
33. Mention the two metals that can be found in a Beryl Ore
34. What is inert pair effect?
35. Using chemical equations, show the reaction of magnesium with nitrogen
36. A group 2 metal M, dissolves in NH3 and from the solution, compound A can be
isolated with the liberation of gas C. Metal M gives a crimson flame test. Suggest the
identities of M, A and C
37. Mention one use of Barium Sulphate.
38. Explain the thermal stability of hydrides of the group 15 elements
39. Write the formulas of metaplumbic acid and carbonic acid
40. Elements with the mass number but different neutron and proton numbers are called
41. What is a ligand?
42. Give an example of a purple coloured manganese compound and the oxidation state
of Mn in the compound
43.
44. An oxide of transition metal used as a catalyst in the contact process is …………….?
45. Why is the electronegativity of Al and Ga almost the same
46. The number of orbitals in a f-sub-shell is ………….
47. The atomic number of an element is 17 and its mass number is 35. The number of
protons, electrons and neutrons present in the atom are……………?
48. The maximum number of electrons that can be accommodated in the nth level is
……..?
49. State the two principal methods involved in concentration of metal ores
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50. Complete the chemical equation below for the thermal decomposition of mercuric
oxide
2HgO(s) + ? + O2(g)51.
52. What is the other product formed when potassium-40 decays to produce calcium-40?
53. What is the charge on Gamma ray?
54. The order of penetrating power of particles from lowest to highest is ?
55. Which of the sub atomic particles is not a nucleon?
56. Define nuclear fusion?
57. The nuclear reaction used to produce energy for nuclear bomb is ?
58. What type of rays can cause genetic changes?
59. An alpha particle is actually a helium _____________ ?
60. ______________ travels at a speed of 3 x 108 m/s
61. How does the ionic radius of K+ compare to the atomic radius of K
62. What is the product resulting from the action of electron affinity and an electron on
a gaseous atom?
63. Arrange the following in order of increasing radius, O2-,Ne,F-64. How would the energy necessary to convert a gaseous Al atom to gaseous a gaseous
Al3+ ion be found?
65. Why is the electron configuration of chromium 1S22S22P63S23P64S13D5 an exception to
the Aufbau principle?
66. Write the excited state configuration of carbon
67. How many electrons are required for the stability of an f-orbital
68. What is the values of magnetic quantum number,
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69. State the rules/principles used for electronic configuration of an atom of an al
element.
70. List two metallurgical industries in Nigeria
DEPARTMENT OF CHEMISTRY
FIRST SEMESTER EXAMINIATION, 2014/2015 SESSION. JUNE,2015
COURSE CODE/TITLE: CHM 111; General Inorganic Chemistry – 3 Credit Units
INSTRUCTION: Answer All Questions. TIME: 1Hour 30Minutes
OPTION A1. What is the difference in terms of thermal stability between lithium trioxocarbonate
(iv) and potassium trioxocarbonate (iv).
2. What is the product of the reaction below
3M + N2 Where M is an alkaline earth metal
3. Why is aluminum resistant to attack by dilute hydrochloric acid .
4. The electronic configuration of indium, atomic number, 49 is?
5. Why are the group 3A elements said to be Lewis acids?
6. Thallium oxide has no acidic character unlike the rest of the 3A oxides. Why?
7. List four elements whose hydroxides are amphoteric in character?
8. Why are +4 ions unknown in group IV A elements?
9. Why is catenation possible in carbon?
10. State for elements that exhibit catenation apart from carbon.
11. Why does zinc lack many typical properties of Transition Metals
12. Which is the Lewis base in the chemical equation represented below? D
+ A D:A
www.fupreblog.com
13 What is the colour of the ion, Cu2+13. What is responsible for magnetism?
15. State one serious disadvantage of iron as a structural material
16. What is the percentage of water in Na2CO3.5H2O
17. What is the difference in the number of electrons of Ca and Ca+18. Why is iron paramagnetic and zinc is not
19. In the extraction of aluminum, 40 tonnes of the ore, bauxite was fed into the
extraction system, instead of the normal 3.6 tonnes. What is the mass error in
Kilogram?
20. Write the chemical formula for the mineral, Trona and state the oxidation number of
oxygen atoms in a mole of the mineral.
21. What is hybridization?
22. How many unpaired electron(s) ha Na atom
23. Which two criteria did Mendeleev use to classify elements in the periodic table?
24. Give the general trend in electronegativity
25. What are the products resulting from the action of ionization energy on a gaseous
atom?
26. The hybridization of orbitals on the central atom in a molecule is sp. What is the
electron domain geometry around the central atom?
27. Which of the quantum numbers is used to characterize the shape of orbitals?
28. What is responsible for sharp decrease in ionization energy from Boron to Aluminum?
29. How many electrons exist in the penultimate shell of Zinc
30. Boron combines with metals to form …………… while Aluminum forms ……….?
31. Use chemical equations to explain the amphoteric nature of Berylium Oxide
www.fupreblog.com
32. Give a simple method you can use to identify a Barium metal and Magnesium metal
33. Mention the two metals that can be found in a Beryl Ore
34. What is inert pair effect?
35. Using chemical equations, show the reaction of magnesium with nitrogen
36. A group 2 metal M, dissolves in NH3 and from the solution, compound A can be
isolated with the liberation of gas C. Metal M gives a crimson flame test. Suggest the
identities of M, A and C
37. Mention one use of Barium Sulphate.
38. Explain the thermal stability of hydrides of the group 15 elements
39. Write the formulas of metaplumbic acid and carbonic acid
40. Elements with the mass number but different neutron and proton numbers are called
41. What is a ligand?
42. Give an example of a purple coloured manganese compound and the oxidation state
of Mn in the compound
43.
44. An oxide of transition metal used as a catalyst in the contact process is …………….?
45. Why is the electronegativity of Al and Ga almost the same
46. The number of orbitals in a f-sub-shell is ………….
47. The atomic number of an element is 17 and its mass number is 35. The number of
protons, electrons and neutrons present in the atom are……………?
48. The maximum number of electrons that can be accommodated in the nth level is
……..?
49. State the two principal methods involved in concentration of metal ores
www.fupreblog.com
50. Complete the chemical equation below for the thermal decomposition of mercuric
oxide
2HgO(s) + ? + O2(g)51.
52. What is the other product formed when potassium-40 decays to produce calcium-40?
53. What is the charge on Gamma ray?
54. The order of penetrating power of particles from lowest to highest is ?
55. Which of the sub atomic particles is not a nucleon?
56. Define nuclear fusion?
57. The nuclear reaction used to produce energy for nuclear bomb is ?
58. What type of rays can cause genetic changes?
59. An alpha particle is actually a helium _____________ ?
60. ______________ travels at a speed of 3 x 108 m/s
61. How does the ionic radius of K+ compare to the atomic radius of K
62. What is the product resulting from the action of electron affinity and an electron on
a gaseous atom?
63. Arrange the following in order of increasing radius, O2-,Ne,F-64. How would the energy necessary to convert a gaseous Al atom to gaseous a gaseous
Al3+ ion be found?
65. Why is the electron configuration of chromium 1S22S22P63S23P64S13D5 an exception to
the Aufbau principle?
66. Write the excited state configuration of carbon
67. How many electrons are required for the stability of an f-orbital
68. What is the values of magnetic quantum number,
www.fupreblog.com
69. State the rules/principles used for electronic configuration of an atom of an al
element.
70. List two metallurgical industries in Nigeria
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