A) 12 B) C) D) E) 16 18 20 24 Which of the following elements is assigned the highest electronegativity value? A) B) C). D) E) 30. K Ba Si Br As Which of the following is an exception to the octet rule? A) B) C) D) E) 31. 2- SO4 CF4 NH3 H2S BF3 The Lewis structure for phosphine, PH3, has A) B) C) D) E) 32. four bonding pairs two bonding pairs and two lone pairs three bonding pairs and one lone pair one bonding pair and three lone pairs four lone pairs

A) 12 B) C) D) E) 16 18 20 24 Which of the following elements is assigned the highest electronegativity value? A) B) C). D) E) 30. K Ba Si Br As Which of the following is an exception to the octet rule? A) B) C) D) E) 31. 2- SO4 CF4 NH3 H2S BF3 The Lewis structure for phosphine, PH3, has A) B) C) D) E) 32. four bonding pairs two bonding pairs and two lone pairs three bonding pairs and one lone pair one bonding pair and three lone pairs four lone pairs

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter6: Covalent Bonding

Section: Chapter Questions

Problem 85QRT

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A compound with a molar mass of about 28 g/mol contains 85.7% carbon and 14.3% hydrogen by mass. Write the Lewis structure for a molecule of the compound.
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