Ionic & Covalent Lewis Structures

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

• A
• B
• C
• D

Hydrogen & Helium need _____ electrons in its valence shell to be stable.

• 4
• 6
• 8
• 2

Tags

NGSS.HS-PS1-1

According to the octet rule most elements need _______ valence electrons.

• 2
• 8
• 6
• 18

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the correct Lewis Dot Structure for ammonia NH3

• 
• 
• 
• 

Which is the correct molecular structure for carbon dioxide?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

Which of the following is the correct Lewis structure for the compound PBr₃?

• structure A
• structure B
• structure C
• structure D

What is the correct formula for this molecule?

• Si₄F
• SiF₄
• SiF
• Si₄F₄

Select the lone pair of electrons for the central atom.

Organize these options into the right categories

Groups:

(a) Ionic Compounds

,

(b) Covalent Compounds

• Similar Electronegativities

• Nonmetals Only

• 
• Metal & Nonmetal

• Nonmetal more electronegative than Metal

• High Melting & Boiling Points

• 
• Low Melting & Boiling Points

• Conduct Electricity

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In ​ (a)   Lewis structures [] are used to show the ​ (b)   of electrons between atoms. In ​ (c)   compounds a ​ (d)   represents a bond ​ (e)   electrons between atoms.

• Ionic
• transfer
• Covalent
• line
• sharing