Lewis Dot Structure

Open Ended

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Multiple Choice

How do you determine valence electrons?

• Valence electrons are determined by the element's group number in the periodic table.
• Valence electrons are calculated based on the element's color in the periodic table.
• Valence electrons are found by subtracting the number of neutrons from protons.
• Valence electrons are determined by the atomic mass of the element.

Open Ended

If animals could talk, which one would be the funniest to have a conversation with?

Open Ended

Why are valence electrons important in determining how atoms interact with each other?

Multiple Choice

What does a Lewis dot structure represent?

• The number of protons in an atom

• The arrangement of atoms in a molecule

• The valence electrons surrounding the atomic symbol

• The atomic mass of an element

Multiple Select

Which of the following are rules for drawing Lewis dot structures?

• No side can have more than two dots.

• Each side gets one dot before doubling up.

• Hydrogen and helium are exceptions to the rules.

• Each side must have exactly two dots.

Open Ended

Explain why elements in the same group of the periodic table have similar Lewis dot structures and how this relates to their chemical properties.

Fill in the Blanks

Elements within the same group have the same electron-dot

.

Multiple Choice

According to the octet rule, how many electrons do atoms prefer to have in their outer shell?

• 2

• 4

• 6

• 8

Multiple Choice

How do Lewis electron dot diagrams for ions differ from those for neutral atoms?

• Ions always have more dots than neutral atoms.

• Ions always have fewer dots than neutral atoms.

• Positive ions have fewer dots and negative ions have more dots than the corresponding atom.

• There is no difference between ions and neutral atoms in Lewis dot diagrams.

Fill in the Blanks

Valence electrons are the electrons in the

energy level of an atom.

Open Ended

What is the significance of valence electrons in determining the chemical properties of an element?