Resonance and Properties of NO2

The video tutorial discusses the concept of resonance in nitrogen dioxide (NO2). It begins by distinguishing between NO2 and NO2 minus, highlighting that NO2 is a neutral molecule while NO2 minus is an ion. The tutorial explains the Lewis structure of NO2, noting that it has 17 valence electrons, leading to an odd number of electrons and an exception to the octet rule for nitrogen. The video then explores the major resonance structures of NO2, showing how the double bond can be positioned differently. It concludes by explaining that in reality, NO2 exists as an average of these resonance structures, with bonds that are neither single nor double but somewhere in between.

What is the main difference between NO2 and NO2-?

• Both are neutral molecules.

• NO2 is a neutral molecule, while NO2- is an ion.

• NO2 is an ion, while NO2- is a neutral molecule.

• Both are ions.

How many valence electrons does nitrogen dioxide (NO2) have?

• 16

• 17

• 18

• 19

In the Lewis structure of NO2, how many valence electrons does nitrogen have?

• 5

• 7

• 6

• 8

Why is nitrogen in NO2 an exception to the octet rule?

• It has fewer than eight valence electrons.

• It shares electrons with more than two atoms.

• It forms a triple bond.

• It has more than eight valence electrons.

What is a major characteristic of the resonance structures of NO2?

• They have the same arrangement of atoms but different electron distributions.

• They have different numbers of atoms.

• They have different total charges.

• They have different types of atoms.

How are the resonance structures of NO2 typically represented?

• With a single structure showing all bonds.

• With multiple structures enclosed in brackets.

• With multiple structures showing different atoms.

• With a single structure showing only lone pairs.

What does the concept of bond averaging in NO2 imply?

• The bonds are triple.

• The bonds are an average of single and double bonds.

• The bonds are always double.

• The bonds are always single.

What is the average bond order in NO2 due to resonance?

• 2.5

• 2

• 1.5

• 1

What is not shown in the simplified resonance structure of NO2?

• The single bonds.

• The nitrogen atom.

• The double bonds.

• The lone pairs of electrons.

Who is the presenter of the video on resonance in NO2?

• Dr. A

• Dr. B

• Dr. D

• Dr. C