Lab 7 Chemistry - Number of Valence electrons PDF

Title	Lab 7 Chemistry - Number of Valence electrons
Course	General Chemistry I
Institution	LaGuardia Community College
Pages	4
File Size	200 KB
File Type	PDF
Total Downloads	17
Total Views	138

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Summary

Number of Valence electrons...

Description

Lab 7 Chemistry

Date Experiment Performed:11/19/20 Date Experiment Submitted:11/20/20

Data

Discussion

What are the trends for atomic size across a period and down a group for the main group elements? Atomic size across a period decreases while atomic size increases down a period. Draw the following Lewis structures: a) ammonium ion b) sulfur trioxide c) hydrogen cyanide a) ammonium ion

b) sulfur trioxide

c) Hydrogen cyanide

Using formal charge formula (or electronegativity differences), to determine the following the best structure, OCS, COS or CSO. 1.

Formal Charge C=4-4=0 O = 6 - 2 -4 = 0 S = 6 -2 -4 = 0 The above structure is best because all atoms have formal change of zero. 2.

Formal Charge

C= 4 - 2 - 4 = -2 O= 6 - 4 = 2 S= 6 - 2 -4 = 0 3.

Formal Charge C = 4 - 2 -4 = -2 S=6-4=2 O=6-2-4=0...