Organic Chemistry, 8e (Bruice)
Chapter 1 Remembering General Chemistry: Electronic Structure and Bonding
1) Atoms with the same number of protons but different numbers of neutrons are called
.
Answer: isotopes
Section: 1-1
2) Which of the following elements does this electronic configuration ...
TEST BANK FOR ORGANIC CHEMISTRY, 8TH EDITION, PAULA YURKANIS BRUICE Organic Chemistry, 8e (Bruice) Chapter 1 Remembering General Chemistry: Electronic Structure and Bonding 1) Atoms with the same number of protons but different numbers of neutrons are called . Answer: isotopes Section: 1 -1 2) Which of the following elements does this electronic configuration represent? 1s2 2s2 2p5 A) F B) C C) N D) Al E) O Answer: A Section: 1 -2 3) How many unpaired electrons are present in the isolated carbon atom (atomic number = 6)? A) none B) one C) two D) three E) four Answer: C Section: 1 -2 4) Which of the following is the electronic configuration of the element Fe? A) 1s2 2s2 2p6 3s2 3p6 4s2 3d6 B) 1s2 2s2 2p6 3s2 3p8 3d6 C) 1s2 2s2 2p8 3s2 3p6 4s2 3d6 D) 1s2 2s2 2p6 3s2 3p6 4s2 4d6 E) 1s2 2s2 2p6 3s2 3p6 4s2 4p6 Answer: A Section: 1 -2 5) The atomic number of boron is 5. The correct electronic configuration of boron is A) 1s2 2s3. B) 1s2 2p3. C) 1s2 2s2 2p1. D) 2s2 2p3. E) 1s2 2s2 3s1. Answer: C Section: 1 -2 6) Which of the following statements correctly describes the third electron shell that surrounds the nucleus of an atom? A) The third shell contains only s and p atomic orbitals. B) The maximum number of electrons that can occupy the third shell is 18. C) The total number of atomic orbitals present in the third shell is 16. D) The third shell can contain f orbitals. E) All third shell elements must have d electrons. Answer: B Section: 1 -2 7) Ar, K+, Cl - are isoelectronic elements (elements with the same number of electrons). What orbital does the last electron occupy? Answer: 3p orbital Section: 1 -2 8) Give the electronic configuration for N -3. A) 1s22s2 B) 1s22s22p3 C) 1s22s22p4 D) 1s22s22p6 E) 1s22s22p63s1 Answer: D Section: 1 -2 9) Give the electronic configuration for Ca+2. Answer: 1s22s22p63s23p6 Section: 1 -2 10) Identify the least electronegative atom. A) P B) Na C) I D) B E) O Answer: B Section: 1 -3 11) Give the number of nonbonding lone pairs of electrons in H2NOH. A) 0 B) 1 C) 2 D) 3 E) 4 Answer: D Section: 1 -4
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