Electronegativity Part 1

The following video looks at the Electronegativity of molecules and its trend on the Periodic table. For more video check me out on iTunes by searching "Papapodcasts"

Category:

Education

Tags:

• chemistry
• papapodcasts
• Mr.P
• science
• atoms
• molecules
• compounds
• formula
• periodic
• table
• elements
• trends
• period
• electronegativity
• intermolecular
• intramolecular
• ionic
• covalent
• polar
• non-polar

[ZahidAnwar5555]

Sir what is the differences of EN between H2O?

[Papapodcasts]

@ZahidAnwar5555 The EN for oxygen is 3.44 and the EN of hydrogen is 2.2. In the formula H2O, O is the middle atom surrounded by the 2 H's. We look at the bond between the O and the H ONLY because that is where the bonds occur. You would not find the EN between the 2 H's because they don't bond together in H2O. Therefore the EN is 1.24, which means that H2O is polar covalent. Hope this helps you. Best Of luck with your studies. Thanks for watching.

Mr. P

[kmart166]

why is Cu more electronegative than Zn If Zn is further along the table?

[Papapodcasts]

@kmart166 Also, zinc can only take on one oxidation state, 2+. this is configuration allows zinc to lose s electrons and retain the electron configuration [Ar]3d10. this is a very energetically favorable and stable compound (octet rule), and the reason zinc is easier to oxidize than copper. Copper is more 'electronegative' because of this fact and the fact that it has 9 d electrons. it wants an extra electron to fill the d shell.

Thanks for watching. Good luck.

Mr.P

[TraciChanel]

Thank you!!! This has helped me a lot :)

[BOOOOMkidddd]

thank you.

[Papapodcasts]

@Parasome The d shell has 5 orbitals and 4 of them are full and the last one only has one electron. It will be more stable arrangement for the electron from a higher energy level (4s) to give up one electron to complete the 3d orbitals. Atoms will try to complete orbitals before filling higher energy levels especially when filling d orbitals. So in other words Cu would be [Ar] 3d10 4s1

Hope that helped you.

[Parasome]

@Papapodcasts Actually Cu has ALL 10 electron in d10 orbital and YES it is suppose to be d9. WHY? I do not know I just remember this fact, if you do know why please tell me!

[Papapodcasts]

@kmart166 You must consider the d electron shell. zinc in its elemental form has all 10 d electrons in place and 2 s electrons. copper only has 9 electrons, with the only open space in the high spin shell.

[Ablagirl]

Oh my lord, this is such a good video...I wish this guy was my teacher. It just got all cleared out now. My teacher could explain this thing a thousand times and I wouldn't understand it.

Thankk youuuuuuu so much.