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1) Which of the following make an isoelectronic pair? A) Ca and Fe³+ B) O and F C) F and CI D) Cl and Ca²+ E) None of the above

1) Which of the following make an isoelectronic pair? A) Ca and Fe³+ B) O and F C) F and CI D) Cl and Ca²+ E) None of the above

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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1) Which of the following make an isoelectronic pair? A) Ca and Fe B) O and F C) F and CI D) Cl and Ca 2) Arrange the following ions in order of increasing ionic radius: K', P, S, CI. increasing radius → E) None of the above A) K'<CT <S² <P³ B) K<P <S² <CT C) P³¹ <S² <CI <K 3) Which of the elements listed below has the highest first ionization energy? D) CI <S² <p³<K' A) He B) Ne C) Ar D) Kr E) Xe 4) The successive () ionization energies of a certain element are I₁=589.5 kJ/mol, ₂-1145 kJ/mol, I=4900 kJ/mol, 4-6500 kJ/mol, and Is-8100 kJ/mol. This pattern of ionization energies suggests that the unknown element is A) K B) Si C) As D) Ca E) S 5) Which of the following elements has the greatest electron affinity? A) Mg B) Al C) Si D) P E) S 6) Select the series of atoms that are arranged in order of increasing electronegativity. A) S< K<Fe< Si<0 B) Fe< K<S< Si<0 C) O<S< Si< Fe< K D) O< Si<S< Fe< K E) None of the above are in order of increasing electronegativity. 7) The bond in which one of the following pairs of atoms would be the most polar? A) B-C B) C-N C) CO D) Si-O 8) The Lewis structure for CS, is: ... " ** ** " ** A) C=S-S B) :S-C-S: C) S=C=S .. .. .. ** .. 9) Which choice includes all the molecules below that do not follow the octet rule? (1) H₂S (2) BF, (3) PH, (4) SI D) (3) and (4) A) (2) and (4) B) (2) and (3) C) (1) and (2) 10) Give the number of lone pairs around the central atom and the geometry of the ion (FS₂) C) 2 lone pairs, bent D) 3 lone pairs, bent A) 0 lone pairs, linear B) 1 lone pair, bent 11) Indicate the type of hybrid orbitals used by the central atom in OBr A) sp B) sp C) sp³ D) sp'd E) sp'd 12) The molecular structure of SeO₂ is: A) Linear B) T-shaped C) Bent D) Tetrahedron E) Trigonal Planner 13) The number of pi bonds in the molecule below is 4 Η ECH A) 18 B) 16 HOC- C) 9 E) C-C **** .. D) S=C-S: D) 3 E) | Pa
Transcribed Image Text:1) Which of the following make an isoelectronic pair? A) Ca and Fe B) O and F C) F and CI D) Cl and Ca 2) Arrange the following ions in order of increasing ionic radius: K', P, S, CI. increasing radius → E) None of the above A) K'<CT <S² <P³ B) K<P <S² <CT C) P³¹ <S² <CI <K 3) Which of the elements listed below has the highest first ionization energy? D) CI <S² <p³<K' A) He B) Ne C) Ar D) Kr E) Xe 4) The successive () ionization energies of a certain element are I₁=589.5 kJ/mol, ₂-1145 kJ/mol, I=4900 kJ/mol, 4-6500 kJ/mol, and Is-8100 kJ/mol. This pattern of ionization energies suggests that the unknown element is A) K B) Si C) As D) Ca E) S 5) Which of the following elements has the greatest electron affinity? A) Mg B) Al C) Si D) P E) S 6) Select the series of atoms that are arranged in order of increasing electronegativity. A) S< K<Fe< Si<0 B) Fe< K<S< Si<0 C) O<S< Si< Fe< K D) O< Si<S< Fe< K E) None of the above are in order of increasing electronegativity. 7) The bond in which one of the following pairs of atoms would be the most polar? A) B-C B) C-N C) CO D) Si-O 8) The Lewis structure for CS, is: ... " ** ** " ** A) C=S-S B) :S-C-S: C) S=C=S .. .. .. ** .. 9) Which choice includes all the molecules below that do not follow the octet rule? (1) H₂S (2) BF, (3) PH, (4) SI D) (3) and (4) A) (2) and (4) B) (2) and (3) C) (1) and (2) 10) Give the number of lone pairs around the central atom and the geometry of the ion (FS₂) C) 2 lone pairs, bent D) 3 lone pairs, bent A) 0 lone pairs, linear B) 1 lone pair, bent 11) Indicate the type of hybrid orbitals used by the central atom in OBr A) sp B) sp C) sp³ D) sp'd E) sp'd 12) The molecular structure of SeO₂ is: A) Linear B) T-shaped C) Bent D) Tetrahedron E) Trigonal Planner 13) The number of pi bonds in the molecule below is 4 Η ECH A) 18 B) 16 HOC- C) 9 E) C-C **** .. D) S=C-S: D) 3 E) | Pa
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