Valence Electrons in CH2F2

Dr. B explains how to draw the Lewis structure for CH2F2, difluoromethane. The video covers counting valence electrons, placing atoms, forming chemical bonds, and ensuring all atoms have full outer shells according to the octet rule. The process involves placing carbon at the center, hydrogen and fluorine on the outside, and using all 20 valence electrons to form bonds and complete octets.

How many valence electrons does Carbon have in the periodic table?

• 2

• 4

• 6

• 8

Which atom is placed at the center of the Lewis structure for CH2F2?

• Carbon

• Oxygen

• Hydrogen

• Fluorine

Why are Fluorine atoms placed on the outside in the Lewis structure?

• They have fewer valence electrons.

• They have more protons.

• They are less electronegative.

• They are more electronegative.

How many valence electrons are used to form bonds between the atoms in CH2F2?

• 10

• 6

• 8

• 4

What is the total number of valence electrons used in the Lewis structure of CH2F2?

• 16

• 18

• 20

• 22