Read the following statements. Which ones are correct? Be sure to explain how you know. I. BF; and PFg are examples of exceptions to the octet rule. II. BF," and BF3-NH3 are examples of violations of the octet rule. III. Expanded valence shells occur most often when the central atom is bonded to a small, electronegative element. IV. The central atoms most capable of having expanded valence shells come from rows 3, 4, and 5 of the periodic table.

Read the following statements. Which ones are correct? Be sure to explain how you know. I. BF; and PFg are examples of exceptions to the octet rule. II. BF," and BF3-NH3 are examples of violations of the octet rule. III. Expanded valence shells occur most often when the central atom is bonded to a small, electronegative element. IV. The central atoms most capable of having expanded valence shells come from rows 3, 4, and 5 of the periodic table.

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

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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3. Which of the following species violate the octet rule (are exceptions to octet rule) BF; SO, PCI; ВеBr. BrCl, РОСІ,
ing and lea X G The element in period 5 that has X ent/takeCovalentActivity.do?locator-assignment-take 3 eq 2. The central nitrogen atom V A. Obeys the octet rule B. Has an incomplete octet. C. Has an expanded octet. Submit Answer [Review Topics] [References] Use the References to access important values if needed for this question. Lewis Structures Lewis Structures are used to describe the covalent bonding in molecules and ions. Draw a Lewis structure for NH4 and answer the following questions based on your drawing. 1. For the central nitrogen atom: The number of lone pairs The number of single bonds = The number of double bonds= 3 Retry Entire Group 4+ C Solved The following Lewis diagr X 00 144 6 9 more group attempts remaining + 0 44 ort sc A ENG deleta Previous back space 16 ☆ Next 11:55 AM 11/28/2022 end 1
2. The molecule LiH has a simple electronic structure. The H atom would like to gain an electron to fill its 1s subshell, but the Li atom would similarly like to fill its 2s subshell. Based on the atomic structure of H and Li, which would you expect to dominate in the desire for an additional electron? Are the electronegativity values of Table 9.6 consistent with this?
A east.cengagenow.com e: CHM 103 003 General Chemistry I C OWLV2 | Online teaching and learning resource from Cengage Learning 6:43 [References] Use the References to access important values if needed for this question. 1 pt Which one of the following bonds is the most polar? (electronegativities: C = 2.5, O = 3.5, Cl= 3.0, N = 3.0, H = 2.1) 1 pt 1 pt O H-CI 1 pt O C-H N-CI 1 pt OC-CI 1 pt O0-0 1 pt Submit Answer Try Another Version 5 item attempts remaining 1 pt 1 pt 1 pt Cengage Learning Cengage Technical Support
From the Lewis structures of the species given, pick all of those in which the central atom obeys the octet rule. HIC H-C-H T H O=N-CI: :Br: AI Br. O None of the Above
Which of the following compound is considered polar? a. HCN b. C2H6 c. H2S d. C2H2 As principal energy levels increase, the pull of the nucleus to the electrons: a. stays the same b. increases c. decreases Which of the following chemical equations correctly shows how ions obey the octet rule? a. Cl ---> Cl- + e- b. Na + e- ---> Na- c. Cl + e- ---> Cl- d. Na ---> Na-+ e-
Which statement is false given the following Lewis structures? Structure III is a valid structure for PF4 because P can expand its octet. Structure I is a valid structure for BBr3 because B (n=2) needs an octet of electrons. Structure II is a valid structure for SeH2 because H needs a duet of electrons. Structure IV is a valid structure for AsO43- because As can expand its octet.
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Part A The CFA molecule has a central C atom bonded to four F atoms, as shown in the figure. Which of the following statements about the CFA molecule is or are true? I. The electrons in the C-F bonds are attracted to both the C and F nuclei. II. The Lewis structure of CF4 shows four bonding pairs of electrons and no nonbonding pairs. III. Every atom in the CF4 molecule satisfies the octet rule. F F-C-F F O Only one of the statements is true O All three statements are true. O I and Il are true. O Il and III are true. O I and IIIl are true. Submit Request Answer dele Fendheal P Type here to search B. amazon Word Go FULL HD 1080