Resonance Structure

Define the term resonance structure

• Delocalization of electrons in an atom

• Delocalization of π electrons within a molecule

• Spread of π electrons in an atom

• Spread of π electrons within a molecule

Using formal charges and the octet rule, determine which Lewis structure of OCN^- is most stable.

• a

• b

• c

• d

• e

For carbonate ions, what is the bond strength between C and O

• C-O (single bond)

• C=O (double bond)

• C≡O (triple bond)

• C-O(between single and double bond)

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A condition that occurs when more than one valid Lewis structure can be drawn for a molecule

• coordinate covalent bond

• resonance

• endothermic

• structural formula

What is the bond order for CO₃^2- ion?

• 1

• 1.5

• 2

• 1.33

Tags

NGSS.HS-PS1-4

What is the bond order for NO₃^- ion?

• 1

• 1.5

• 2

• 1.3

Tags

NGSS.HS-PS1-3

Which of the following best describes resonance structures?

• Different molecules with the same molecular formula

• Different arrangements of atoms in a molecule

• Different possible arrangements of electrons in a molecule

• Different phases of a substance

In which of the following molecules does resonance occur?

What is the significance of resonance structures in chemistry?

• They indicate the molecule is unstable

• They show the actual structure of the molecule

• They represent the delocalization of electrons

• They are used to calculate molecular weight

Which of the following is a characteristic of resonance structures?

• They have different numbers of electrons

• They have the same arrangement of atoms

• They have different molecular formulas

• They have different physical states