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Study Resources (Chemistry)

31) Which periodic table group contains only nonmetals? A) 8A B) 2A C) 6A D) 7A E) 5A 32) Which periodic table group contains only metals? A) 8A B) 2A C) 6A D) 7A E) 5A 33) Of the hydrogen halides, only __________ is a weak acid. A) HCl (aq) B) HBr (aq) C) HF (aq) D) HI (aq) E) They are all weak acids. 34) All the.
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81) The hybridization of the oxygen atom labeled x in the structure below is __________. A) sp B) sp2 C) sp3 D) sp3d E) sp3d2 82) The Lewis structure of carbon dioxide is given below. The hybridization of the carbon atom in carbon dioxide is __________. A) sp3 B) sp2 C) sp D) sp2d E) sp2d2 83) Electrons in __________ bonds remain.
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21) Which of the following correctly represents the third ionization of aluminum? A) Al+2 (g)  +  e-  →  Al+1 (g) B) Al (g)  →  Al+ (g)  +  e- C) Al-2 (g)  +  e-  →  Al3- (g) D) Al+2 (g)  +  e-  →  Al3+ (g) E) Al+2 (g)  →   Al3+ (g)  +  e- 22) Which equation correctly.
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41) The combination of two atomic orbitals results in the formation of __________ molecular orbitals. A) 1 B) 2 C) 3 D) 4 E) 0 42) The electron-domain geometry of a carbon-centered compound is tetrahedral.  The hybridization of the central carbon atom is __________. A) sp B) sp2 C) sp3 D) sp3d E) sp3d2 43) Of the following, only __________ has sp2.
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21) A molecule has the formula AB3 and the central atom is in a different plane from the surrounding three atoms. Its molecular shape is __________. A) tetrahedral B) trigonal pyramidal C) linear D) T-shaped E) bent 22) PCl5 has __________ electron domains and a __________ molecular arrangement. A) 6, trigonal bipyramidal B) 6, tetrahedral C) 5, square pyramidal D).
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11) Polyatomic ions with an odd number of electrons will __________ the octet rule. 12) The strength of a covalent bond is measured by its __________. 13) To produce maximum heat, an explosive compound should have __________ chemical bonds and decompose to molecule with __________ bonds. 14) Calculate the bond energy of C?F.
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11) Which of the following would have to gain two electrons in order to achieve a noble gas electron configuration? O        Sr        Na        Se        Br A) Br B) Sr C) Na D) O, Se E) Sr, O, Se 12) For a given arrangement of ions, the lattice energy increases as ionic radius __________ and as ionic charge.
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8.2   Bimodal Questions 1) Based on the octet rule, magnesium most likely forms a __________ ion. A) Mg2+ B) Mg2- C) Mg6- D) Mg6+ E) Mg- 2) Based on the octet rule, phosphorus most likely forms a __________ ion. A) P3+ B) P3- C) P5+ D) P5- E) P+ 3) Based on the octet rule, aluminum most likely forms an __________ ion. A) Al3+ B).
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8.1   Multiple-Choice Questions 1) Which ion below has a noble gas electron configuration? A) Li2+ B) Be2+ C) B2+ D) C2+ E) N2- 2) Of the ions below, only __________ has a noble gas electron configuration. A) S3- B) O2+ C) I+ D) K- E) Cl- 3) Which of the following has eight valence electrons? A) Ti4+ B) Kr C) Cl- D) Na+ E) all of the above 4).
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7.3   Algorithmic Questions 1) Which element would be expected to have chemical and physical properties closest to those of argon? A) Cl B) S C) Fe D) O E) Kr 2) In which orbital does an electron in a phosphorus atom experience the greatest shielding? A) 2p B) 3s C) 3p D) 2s E) 1s 3) In which orbital does an electron in.
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9.5   True/False Questions 1) Possible shapes of AB3 molecules are linear, trigonal planar, and T-shaped. 2) Boron trifluoride has three bonding domains and its electron domain geometry is trigonal planar. 3) Electron domains for single bonds exert greater force on adjacent domains than the electron domains for multiple bonds. 4) The quantitative amount of.
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61) Nonmetals can be __________ at room temperature. A) solid, liquid, or gas B) solid or liquid C) solid only D) liquid only E) liquid or gas 62) Which of the following is not a characteristic of metals? A) acidic oxides B) low ionization energies C) malleability D) ductility E) These are all characteristics of metals. 63) When two elements combine to.
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11) Using the Born-Haber cycle, the ΔHf° of KBr is equal to __________. A) ΔHf°[K (g)]  +  ΔHf°[Br (g)]  +  Il(K)  +  E(Br)  +  ΔHlattice B) ΔHf°[K (g)]  -  ΔHf°[Br (g)]  - Il(K)  -  E(Br)  -  ΔHlattice C) ΔHf°[K (g)]  -  ΔHf°[Br (g)]  +  Il(K)  -  E(Br)  +  ΔHlattice D) ΔHf°[K (g)]  +  ΔHf°[Br.
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21) The reaction of potassium metal with elemental hydrogen produces __________. A) KH B) KH2 C) K2H D) None of the above; potassium will not react directly with hydrogen. E) KOH 22) What is the coefficient of H2O when the following equation is completed and balanced? Ba (s)  +  H2O (l)  → A) 1 B) 2 C) 3 D) 5 E).
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71) Consider the following properties of an element: (i)It is solid at room temperature. (ii)It easily forms an oxide when exposed to air. (iii)When it reacts with water, hydrogen gas evolves. (iv)It must be stored submerged in oil. Which element fits the above description the best? A) sulfur B) copper C) mercury D) sodium E) magnesium 72) Which of the following.
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11) [Kr]5s2 is the electron configuration for __________. 12) In their compounds, the charges on the alkali metals and the alkaline earth metals are __________ and __________, respectively. 13) Which alkali metals can react with oxygen to form either the peroxide or the superoxide? 14) Write the balanced equation for the reaction of.
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31) Of the following species, __________ has the largest radius. A) Rb+ B) Sr2+ C) Br- D) Kr E) Ar Consider the following electron configurations to answer the questions that follow: (i)1s22s22p63s1 (ii)1s22s22p63s2 (iii)1s22s22p63s23p1 (iv)1s22s22p63s23p4 (v)1s22s22p63s23p5 32) The electron configuration belonging to the atom with the highest second ionization energy is __________. A) (i) B) (ii) C) (iii) D) (iv) E) (v) 33) The electron configuration that.
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21) The electron-domain geometry of the AsF6- ion is octahedral.  The hybrid orbitals used by the As atom for bonding are __________ orbitals. A) sp2d2 B) sp3 C) sp3d D) sp3d2 E) sp2 22) In order to produce sp3 hybrid orbitals, __________ s atomic orbital(s) and __________ p atomic orbital(s) must be mixed. A) one, two B) one,.
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31) The molecular geometry of the PF3 molecule is __________, and this molecule is __________. A) trigonal planar, polar B) trigonal planar, nonpolar C) trigonal pyramidal, polar D) trigonal pyramidal, nonpolar E) tetrahedral, unipolar 32) Of the following molecules, only __________ is polar. A) BeCl2 B) BF3 C) CBr4 D) SiH2Cl2 E) Cl2 33) Of the following molecules, only __________ is polar. A).
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91) An antibonding π orbital contains a maximum of __________ electrons. A) 1 B) 2 C) 4 D) 6 E) 8 92) According to MO theory, overlap of two s atomic orbitals produces __________. A) one bonding molecular orbital and one hybrid orbital B) two bonding molecular orbitals C) two bonding molecular orbitals and two antibonding molecular orbitals D) two.
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41) Which atom can accommodate an octet of electrons, but doesn't necessarily have to accommodate an octet? A) N B) C C) H D) O E) B 42) Bond enthalpy is __________. A) always positive B) always negative C) sometimes positive, sometimes negative D) always zero E) unpredictable 43) Given that the average bond energies for C-H and C-Br bonds are 413.
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11) Which one of the following atoms has the largest radius? A) O B) F C) S D) Cl E) Ne 12) Of the compounds below, __________ has the smallest ionic separation. A) KF B) K2S C) RbCl D) SrBr2 E) RbF 13) __________ is isoelectronic with argon and __________ is isoelectronic with neon. A) Cl-, F- B) Cl-, Cl+ C) F+, F- D) Ne-, Kr+ E).
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7.4   Short Answer Questions 1) The degree of interaction between two electrical charges depends on the __________ and the __________ of the charges and the distance between them. 2) As successive electrons are removed from an element, the ionization  energy __________. 3) Which noble gas has the  highest first ionization  energy? 4) When electrons.
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7.2   Bimodal Questions 1) __________ is credited with developing the concept of atomic numbers. A) Dmitri Mendeleev B) Lothar Meyer C) Henry Moseley D) Ernest Rutherford E) Michael Faraday 2) Elements in the modern version of the periodic table are arranged in order of increasing __________. A) oxidation number B) atomic mass C) average atomic mass D) atomic number E) number of.
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21) The formula of palladium(IV) sulfide is __________. A) Pd2S4 B) PdS4 C) Pd4S D) PdS2 E) Pd2S2 22) Elements from opposite sides of the periodic table tend to form __________. A) covalent compounds B) ionic compounds C) compounds that are gaseous at room temperature D) homonuclear diatomic compounds E) covalent compounds that are gaseous at room temperature 23) Determining lattice energy.
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9.1   Multiple-Choice Questions 1) The basis of the VSEPR model of molecular bonding is __________. A) regions of electron density on an atom will organize themselves so as to maximize s-character B) regions of electron density in the valence shell of an atom will arrange themselves so as to maximize overlap C) atomic orbitals.
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11) The Cl-Si-Cl bond angle in the SiCl2F2 molecule is approximately __________. A) 90° B) 109.5° C) 120° D) 180° E) 60° 12) The F-B-F bond angle in the BF3 molecule is __________. A) 90° B) 109.5° C) 120° D) 180° E) 60° 13) The O-S-O bond angle in SO2 is slightly less than __________. A) 90° B) 109.5° C) 120° D) 180° E) 60° 14) The F-N-F.
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9.2   Bimodal Questions 1) For a molecule with the formula AB2 the molecular shape is __________. A) linear or bent B) linear or trigonal planar C) linear or T-shaped D) T-shaped E) trigonal planar 2) For a molecule with the formula AB3 the molecular shape is __________. A) linear, octahedral, or bent B) linear, bent, or trigonal planar C) linear,.
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9.3   Algorithmic Questions 1) According to VSEPR theory, if there are six electron domains in the valence shell of an atom, they will be arranged in a(n) __________ geometry. A) linear B) tetrahedral C) trigonal planar D) trigonal bipyramidal E) octahedral 2) The electron-domain geometry and molecular geometry of ammonia are __________ and __________, respectively. A) octahedral, T-shaped B).
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71) In a typical multiple bond, the σ bond results from overlap of __________ orbitals and the π bond(s) result from overlap of __________ orbitals. A) hybrid, atomic B) hybrid, hybrid C) atomic, hybrid D) hybrid, hybrid or atomic E) hybrid or atomic, hybrid or atomic 72) The carbon-carbon σ bond in ethylene, H2C?CH2, results from.
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9.4   Short Answer Questions 1) What is the molecular geometry of a molecule that has three bonding and two non-bonding domains? 2) In the valence shell of an atom there are six electron domains. They will be arranged in a (an) __________ geometry. 3) What are the three bond angles in the trigonal.
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31) In the molecule below, which atom has the largest partial negative charge? Cl ? F? C ?Br ? I A) Cl B) F C) Br D) I E) C 32) The ability of an atom in a molecule to attract electrons is best quantified by the __________. A) paramagnetism B) diamagnetism C) electronegativity D) electron change-to-mass ratio E) first ionization potential 33) Given.
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31) A valid Lewis structure of __________ cannot be drawn without violating the octet rule. A) NF3 B) IF3 C) PF3 D) SbF3 E) SO42- 32) Based on the octet rule, boron will most likely form a __________ ion. A) B3- B) B1+ C) B3+ D) B2+ E) B2- 33) Which of the following does not have eight valence electrons? A) Cl- B) Xe C).
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8.5   True/False Questions 1) Atoms surrounded by eight valence electrons tend to lose electrons. 2) The greater the lattice energy, the greater the charges on the participatory ions and the smaller their radii. 3) Most transition metals do not form ions with a noble gas configuration. 4) When a metal gains an electron,.
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8.3   Algorithmic Questions 1) There are __________ paired and __________ unpaired electrons in the Lewis symbol for a chlorine atom. A) 4, 2 B) 4, 1 C) 6, 1 D) 0, 5 E) 2, 5 2) There are __________ unpaired electrons in the Lewis symbol for a (an) sodium ion. A) 3 B) 2 C) 0 D) 4 E) 1 3) The principal.
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11) Using the VSEPR model, the molecular geometry of the central atom in SO2 is __________. A) linear B) trigonal planar C) tetrahedral D) bent E) trigonal pyramidal 12) Using the VSEPR model, the molecular geometry of the central atom in NCl3 is __________. A) linear B) trigonal planar C) tetrahedral D) bent E) trigonal pyramidal 13) Using the VSEPR model, the.
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8.4   Short Answer Questions 1) The electron configuration that corresponds to the Lewis symbol, : . is __________. 2) Write the balanced chemical equation for the reaction for which ΔH?rxn is the lattice energy for potassium bromide. 3) Using the noble gas shorthand notation, write the electron configuration for Fe+3. 4) Give the electron.
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7.5   True/False Questions 1) The effective nuclear charge acting on an electron is larger than the actual nuclear charge. 2) The effective nuclear charge in an atom is proportional to the number of nuclear protons. 3) The atomic radius of iodine is one-half the distance separating the iodine nuclei. 4) A group of.
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