Lewis Dot Diagrams and Chemical Bonds

How many electrons are shown in the Lewis electron-dot structure of Carbon (C)?

• 5

• 1

• 4

• 8

Tags

NGSS.MS-PS1-1

How many electrons are shown in the Lewis electron-dot structure of Nitrogen (N)?

• 4

• 5

• 8

• 1

Tags

NGSS.HS-PS1-1

Which of the following is a reason that Lewis electron dot diagrams only show electrons in the outmost orbital of an atom?

• Outer-shell electrons have less energy than inner-shell electrons.

• Lewis electron-dot diagrams would get too complicated if each atom showed all of its electrons.

• Inner-shell electrons cannot be proven to exist and thus should not be included in a Lewis electron dot structue.

• Only outer shell electrons can be involved in chemical bonds.

Tags

NGSS.HS-PS1-1

In Lewis structures, the valence electrons are represented by ___________.

• Dots

• Lines

• Arrows

• None of the above

• Dashes

Given the Lewis dot structures of oxygen and magnesium, predict the ionic formula ________.

• Mg₂O₆

• MgO

• Mg₆O₂

• MgO₄

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is the Lewis dot structure for Si?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-1

Which if the following is the correct Lewis dot structure for C₂H₄

• 
• 
• 
• 

________ molecules have single covalent bonds with the two electrons allowing each atom to attain the helium configuration.

• Lithium

• Hydrogen

• Sodium

• Rubidium

True or False?

Both of the above Lewis structures are correct.

• True

• False

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is the correct Lewis dot structure for C₂Cl₂?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-1