Recent content by Talita

Ok, but there's still a doubt. The movements that are attributed to water are symmetrical and asymmetrical stretchings and scissoring. But the possible rocking movement in water doesn't change angle too? Thanks again!

We all know that angular molecules have 3N-6 vibrational degrees of freedom. So, why lots of books show that water has more than 3 modes of vibration, like rocking, wagging and twisting? Another example is -CH2 group. You can see what I said here: http://chemistry.ncssm.edu/watervibCS.pdf...

Sorry for my late reply, Khashishi. I understand what you said, but my doubt has not been answered yet :/ I see that 1s² and 2s² have the same configuration, but they don't correspond to the same orbital. So, the energies that describe them should be different. If the energies are different...

Terrm symbols are really letting me confused. A spectroscopic term or term symbol is used to identify different arrangments of a given electronic configuration. For example, to carbon in ground state (1s² 2s² 2p²) there are a lot of different possible values for ml and ms, and term symbols can...

In vibrational spectroscopy we read peaks related to normal modes of a molecule. But I just can't understand: we can have a combination of those normal modes of vibration, right? So how can I read a spectrum of a molecule if this molecule can absorb a frenquency that might excite a combination...