Projection operator method: sigma molecular orbitals of water (H₂O)

00:07 Sketch of axes
02:05 Reducible representation for sigma orbitals
04:54 A1 irreducible representation
07:18 A2 irreducible representation
09:05 B1 irreducible representation
10:35 B2 irreducible representation
14:15 Effect of symmetry operations on representative orbital
15:00 A1 group orbital combination
16:10 B1 group orbital combination
17:30 Combining group orbitals with atomic orbitals on oxygen
21:55 Sketching energy level diagram for molecular orbitals
Derivation of the sigma molecular orbitals of water by the projection operator method.
Don't forget to like, comment, share, and subscribe!

[@lseinjr1]

(For mobile users)
00:07 Sketch of axes
02:05 Reducible representation for sigma orbitals
04:54 A1 irreducible representation
07:18 A2 irreducible representation
09:05 B1 irreducible representation
10:35 B2 irreducible representation
14:15 Effect of symmetry operations on representative orbital
15:00 A1 group orbital combination
16:10 B1 group orbital combination
17:30 Combining group orbitals with atomic orbitals on oxygen
21:55 Sketching energy level diagram for molecular orbitals

[@hazar2354]

Hello, i finally understood. I have been dealing with subject for about a week. I just cannot thank you enough.

[@ErolMazharAksoy]

11:33 I was looking at screen with anticipation then you fix 1 to 2 and I got relaxed...

[@annieespinoza8476]

Thanks a lot, sir! It had been really helpful and well done. Thanks from Ecuador

[@ayariolivares1762]

My professor wrote 2, 0, 0, 2 and it confuses me. I watched your video and it made sense!

[@hemlatabhatt2865]

Thanku very much sir by providing this topic u have done a very precious work for me🙏🙏

[@jagathbandara992]

Thank you very much sir understood very well as i wish

[@nurcanacar7382]

Thanks sir .
good tutorial. and very successful

[@saranyaramesh3344]

Thank u very much Sir!!!!!

[@marokiacisse3738]

Thank you much 👏👏

[@fathimahameedc6078]

Thank you sir

[@sugammishra9559]

Thanks sir.....

[@ayishajaleenacp2667]

Sir please make video of formaldehyde on this topic

[@user-xu6wp4vo5m]

Why the boiling point of H2O is higher than that HF?

[@lseinjr1]

Each HF molecule can make two (2) hydrogen bonds; H is an H-donor and F is a H-acceptor.
H₂O, on the other hand, can make up to four (4) hydrogen bonds; each of the two (2) H's are H-donors, and the oxygen atom is a double H-acceptor (it can accept two H-bonds, because it has two lone pairs.)
Higher boiling point comes from greater strength of intermolecular forces. For HF and H₂O, the relevant intermolecular force is hydrogen bonding, and four (4) hydrogen bonds per molecule is stronger than two (2) hydrogen bonds per molecule.
Does that make sense?

[@jafarjhandeer9677]

Thanks sir