Valence Electrons and Formal Charge

Calculate the Formal Charge for the Oxygen Labeled 1 

• -1
• +1
• 0
• -2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Calculate the Formal Charge for the Oxygen Labeled 2 

• -1
• +1
• 0
• -2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

• 2
• 8
• 6
• 18

Tags

NGSS.HS-PS1-1

How many valence electrons does carbon have?

• 4

• 5

• 6

• 7

Tags

NGSS.HS-PS1-1

The Lewis structure of the CO₃^2- ion is

• 
• 
• 
• 
• 

Tags

NGSS.HS-PS1-2

Resonance structures differ by __________.

• number and placement of electrons

• number of electrons only

• placement of atoms only

• number of atoms only

• placement of electrons only

Which atom can accommodate an octet of electrons, but doesn't necessarily have to accommodate an octet?

• N

• C

• H

• O

• B

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Covalent bonds are formed through the ____ of valence electrons

• Transfer
• Sharing
• Donation
• Removal

Tags

NGSS.HS-PS1-1

How strongly an atom attracts electrons is called....................

• Ionization energy
• Electronegativity
• Electricity
• Nuclear force

Which of the following compounds contains BOTH ionic and covalent bonds?

• NaCl

• Li₂CO₃

• CO₂

• MnO₂

• HCN