Understanding π-Bonding: Localized vs. Delocalized - MC Exercise Solutions

[kaitoufion]

I just had an MC exercise but am not very sure on the answers for the following questions

Can someone help me please? There are 2 short questions in total.


Which of the following contain localised (but not delocalised) π(pi)-bonding?

BeF2
CO3(2-)
CO2
H2CO
H2O
NO3(1-)
SF4
O3


Which of the following contain delocalised π(pi)-bonding?

BeF2
CO3(2-)
CO2
H2CO
H2O
NO3(1-)
SF4
O3



Please help me

 

[Gokul43201]

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[Blueshift5]

I would be happy to help you understand the concept of localized and delocalized π-bonding. π-bonding is a type of bonding that occurs when two atoms share electrons in a parallel orbital, creating a bond that is stronger than a single covalent bond. This type of bonding is important in many chemical reactions and plays a crucial role in the properties of molecules.

In localized π-bonding, the π-electrons are shared between two adjacent atoms and are confined to a specific region of space. This type of bonding is usually seen in molecules with multiple bonds, such as double or triple bonds. On the other hand, delocalized π-bonding occurs when the π-electrons are shared between more than two atoms and are spread out over a larger region of space. This type of bonding is often seen in molecules with resonance structures, where the π-electrons can move between different atoms.

Now, let's apply this knowledge to the MC exercise questions. In the first question, we are asked to identify molecules that contain localized π-bonding. From the given options, BeF2, CO2, H2CO, H2O, and SF4 all contain localized π-bonding. This is because in these molecules, the π-electrons are shared between two adjacent atoms and are not spread out over a larger region.

In the second question, we are asked to identify molecules that contain delocalized π-bonding. From the given options, CO3(2-), NO3(1-), and O3 contain delocalized π-bonding. This is because in these molecules, the π-electrons are shared between more than two atoms and are spread out over a larger region.

I hope this helps you understand the concept of localized and delocalized π-bonding. If you have any further questions, please don't hesitate to ask. Keep up the good work in your studies!