Lewis Structure of CF2Cl2 Concepts

Dr. B explains how to draw the Lewis structure for CF2Cl2, dichlorodifluoromethane. The video begins with calculating the total valence electrons using the periodic table. Carbon, fluorine, and chlorine's valence electrons are summed to get 32. The structure is drawn with carbon at the center, surrounded by fluorines and chlorines. Electrons are added to form bonds, ensuring each atom has a full octet. The video concludes with a check of the octets and a mention of an alternative structural formula.

How many valence electrons does carbon contribute in the Lewis structure of CF2Cl2?

• 2

• 4

• 6

• 8

Which group in the periodic table does fluorine belong to?

• Group 4

• Group 6

• Group 7

• Group 5

In the Lewis structure of CF2Cl2, which atom is placed at the center?

• Chlorine

• Hydrogen

• Carbon

• Fluorine

Why is carbon placed at the center of the CF2Cl2 molecule?

• It is the least electronegative

• It has the most valence electrons

• It has the highest atomic number

• It is the most electronegative

How many electrons are used to form chemical bonds in the initial skeleton of CF2Cl2?

• 8

• 10

• 6

• 4

What is the total number of valence electrons used in the Lewis structure of CF2Cl2?

• 30

• 34

• 32

• 28

What is the significance of achieving a full octet in the Lewis structure?

• It decreases the atomic radius

• It ensures maximum electronegativity

• It provides stability to the molecule

• It increases the atomic mass

What alternative representation can be used for the Lewis structure of CF2Cl2?

• Ionic formula

• Structural formula

• Empirical formula

• Molecular formula