Drawing Lewis Structures in Five Simple Steps

This video tutorial teaches how to draw basic Lewis structures using five main steps. It covers finding valence electrons, determining the central atom based on electronegativity, completing octets, and forming double or triple bonds when necessary. The tutorial emphasizes the importance of practice to master these skills.

How many valence electrons does a water molecule (H2O) have?

• 10

• 12

• 8

• 6

What is the total number of valence electrons in a cyanide ion (CN-)?

• 11

• 8

• 9

• 10

Which atom is the most electronegative?

• Oxygen

• Fluorine

• Nitrogen

• Chlorine

In the Lewis structure of NO2, which atom is placed at the center?

• Oxygen

• Nitrogen

• Fluorine

• Hydrogen

Where should hydrogen always be placed in a Lewis structure?

• Next to the least electronegative atom

• In the center

• Next to the most electronegative atom

• On the outside

How many valence electrons are used to form a chemical bond between hydrogen and chlorine in HCl?

• 1

• 2

• 3

• 4

What does the term 'octet' refer to in Lewis structures?

• 6 valence electrons

• 7 valence electrons

• 8 valence electrons

• 9 valence electrons

How many valence electrons does hydrogen need for a full outer shell?

• 1

• 2

• 4

• 3

What should you do if you run out of valence electrons and still haven't completed the octets?

• Add more valence electrons

• Ignore the octet rule

• Remove some valence electrons

• Form double or triple bonds

How many valence electrons are shared in a double bond?

• 8

• 6

• 4

• 2