Lewis Dot Structure & Bonding Diagrams

The pair of elements that forms a covalent bond

• Na and Cl

• K and Cl

• O and Cl

• Mg and Cl

Which of the following diagrams correctly represents the

formation of a compound consisting of magnesium and fluorine?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Compared with nonmetals, the number of valence electrons in metals is generally

• smaller

• greater

• about same

• almost triple

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element's atoms have the greatest tendency to gain electrons?

• Ni

• Ca

• Mg

• F

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

According to the octet rule, a calcium atom has a tendency to

• lose 1 electron

• lose 2 electrons

• gain 1 electron

• gain 2 electrons

Tags

NGSS.HS-PS1-1

How many total electrons are shared in a triple bond?

Which is the correct molecular structure for carbon dioxide?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-2

Which Lewis Dot Model drawing correctly shows an O₂ molecule?

• 
• 
• 
• 

What is the correct Lewis Dot Structure for ammonia NH3

• 
• 
• 
• 

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is the correct Lewis dot structure for the molecule fluorine (F₂)?

• A
• B
• C
• D

Tags

NGSS.HS-PS1-2