RelativeResourceManager;JSESSIONID=YYxbLsXJkp1TpV67dSdyfBJpg9MfC9X9mllv16QhNgzJKcSCc3VW!-979530100!n

RelativeResourceManager;JSESSIONID=YYxbLsXJkp1TpV67dSdyfBJpg9MfC9X9mllv16QhNgzJKcSCc3VW!-979530100!n

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEMISTRY 121 1 Department of Chemistry University of British Columbia Problem Set 3 Lewis Structures 1. When choosing among a set of non-equivalent electron-dot structures for a chemical species, the most favoured is the one (a) that contains the greatest number of double bonds (b) in which the sum of the formal charges is always zero (c) that contains only single bonds (d) in which the formal charges on atoms are as low as possible (e) in which the central atom always has positive formal charge 2. Draw Lewis structures for each of the following molecules or ions. Show lone pairs as pairs of dots and show any non-zero formal charges. (a) NF 3 (b) H 2 S (c) BCl 3 (d) CH 4 (a) [BH 4 ] 3. Which of the following represents an electron-dot structure for CN ? (a) [:C=N] (b) [:C=N] (c) [:C=N:] (d) [·C N:] (e) [:C N:] 4. Draw the best Lewis structure for HNCO. The connectivity is H—N—C—O. Show lone pairs as pairs of dots and show any non-zero formal charges.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

RelativeResourceManager;JSESSIONID=YYxbLsXJkp1TpV67dSdyfBJpg9MfC9X9mllv16QhNgzJKcSCc3VW!-979530100!n

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online