Formal Charges and Resonance Structures

Polarity of a molecule is determined by

• shape and charge

• symmetry/asymmetry of molecule and difference in EN value

• difference in EN value and size

• difference in EN value and charges

Tags

NGSS.HS-PS1-1

CO₂ has polar bonds but is a NON POLAR molecule. Why?

• it has an asymmetrical shape

• bond polarity or dipole moment between C and O atoms cancel

• there is net dipole moment between C and O atoms in molecule

• bond polarity does not exist between C⁺ and O^- atoms

Does the following reference Polar, Nonpolar, or both:

"electronegativity values are the same"?

• Polar

• Nonpolar

• Both

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

• Ionization energy
• Electronegativity
• Electricity
• Nuclear force

Is this molecule polar or nonpolar?

• polar

• nonpolar

Tags

NGSS.HS-PS1-2

Which of the following is an acceptable Lewis structure for CH₃Cl?

• Option A
• Option B
• Option C
• Option D

Tags

NGSS.HS-PS1-1

Will this molecule be polar or nonpolar? PH₃

• polar
• nonpolar

Tags

NGSS.HS-PS1-2

Which of the following is the correct Lewis structure for CH₂O?

• Option A
• Option B
• Option C
• Option D

Determine Polarity:

• Polar

• Nonpolar

2. Which of the following molecules is the least polar?

• H − N

• H − Si

• H − O

• H − C