Lewis Structures and Ionic Compounds

Lewis dot structures follow the octet rule - what is the MAXIMUM amount of valence electrons/dots that a Lewis dot structure can have?

• 8 electrons

• 2 electrons

• 18 electrons

• 0 electrons

What is the correct Lewis dot structure for SiCl4?

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Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the difference between the valence electrons in an ionic bond versus a covalent bond?

• Covalent compounds transfer electrons; Ionic compounds share electrons

• Both covalent and ionic compounds transfer electrons

• Covalent compounds share electrons; Ionic compounds transfer electrons

• Both covalent and ionic compounds share electrons

How many valence electrons would be in the Lewis dot diagram for CF4?

• 44 valence electrons

• 28 valence electrons

• 4 valence electrons

• 32 valence electrons

Tags

NGSS.HS-PS1-1

What type of compound is barium hydroxide, Ba(OH)₂?

• diatomic

• acidic

• covalent

• ionic

Which of these is NOT an exception to the octet rule when drawing Lewis dot structures?

• stable with less than 8 electrons

• odd number of electrons

• expanded octet

• double octet

Name this compound: Na₂C₂O₄.

• sodium acetate

• nickel oxalate

• nickel acetate

• sodium oxalate

What is true about Lewis Structures? (Check all that apply.)

• Lewis Structures show all of the electrons for each atom in the molecule.

• Lewis Structures can be drawn using valence electrons of the atoms in a molecule.

• Lewis Structures can be used to determine the molecular geometry of a molecule.

• Lewis Structures show ions that have gained and lost electrons.

Which statement is true?

• Ionic and covalent compounds are called formula units.

• Ionic compounds are formulas units and covalent compounds are molecules.

• Ionic compounds are molecules and covalent compounds are formula units.

• Ionic and covalent compounds are called molecules.

How many valence electrons are nonmetals trying to have to become more stable?

• 5

• 6

• 7

• 8