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Why p branch is more intense than r branch in v-r spectrum?
In vibrational-rotational (v-r) spectroscopy, the p branch corresponds to transitions where the rotational quantum number decreases, while the r branch corresponds to transitions where the rotational quantum number increases. The p branch is typically more intense than the r branch due to factors such as the Boltzmann distribution, which favors lower energy states, and the selection rules that make transitions to lower rotational states more probable. Additionally, the population of lower rotational states is often higher at thermal equilibrium, leading to greater intensity in the p branch.
Why are N2 and O2 not greenhouse gasses?
The O2 and N2 are homonuclear molecules. So the rotational wave function of the diatomic homonuclear molecules should be symmetric or antisymmetric under the exchange of the two identical nuclei, depending on whether they are bosons or fermions. This would imply that the l quantum number is either even or odd. In either case, in rotational transitions the change in l should be at least 2. This violates the selection rule for electric dipole transitions, namely the change in l should be one. So the electric dipole transitions are forbidden in the rotational transitions of these molecules. The electric dipole transitions are the most prominent transitions whenever the wavelength is much larger than the size of the system, which is evidently true for the rotational transition wavelengths of the diatomic molecules. The vibrational transitions of these molecules can only absorb one wavelength because in electric dipole transitions, the n quantum number of the vibrational spectrum can only change by one unit and the vibrational spectrum is equally spaced, just like the energy spectrum of a one dimensional harmonic oscillator.
What happens to an object if the torques acting are not balanced?
The object will undergo rotational acceleration: it will either rotate faster or slower than previously.
Frank condon principle?
The Frank-Condon Principle states that transitions between electronic states correspond to vertical lines on an energy vs. internuclear distance diagram. The basis of this principle is that electronic transitions happen on a timescale that is significantly smaller than the vibrational period of a given molecule and therefore the distance at which they happen can be assumed to be fixed during the transition. This is significant for spectroscopy because the most intense spectral lines will correspond to transitions to the vibrational state in the upper electronic state that have the most overlap with the ground vibrational state in the lower electronic state. (From Thomas Engel's Quantum Chemistry and Spectroscopy)
Why is the specific heat of poly atomic gases is higher than that of mono atomic gases?
Diatomic gases can absorb heat to increase their vibrational and rotational energy in addition to their translational energy. Monatomic gases have no bonds to vibrate or rotate.
How heat is transferred in liquid using observation from the experiment?
heat is actuly the vibrational energy at molecular or atomic level. in liquid molecules move freely so that they colide with each other and such that the vibrational energy transfers into one another molecule.that is the heat transfer in liquid. in gas this process is very fast. but in solid the moleculer moment not possible such that vibrational energy passes only to nearest one and the process is seen very slower than seen in liquid.
what natural frequency of the atoms in glass is in the A Visible part of the spectrum B untraviolet part of the spectrum C infrared part of the spectrum?
The natural frequency of atoms in glass typically falls in the infrared part of the spectrum. Infrared radiation corresponds to vibrational modes of the atoms in a material. The frequencies of energy in the visible and ultraviolet parts of the spectrum are generally due to electronic transitions in atoms or molecules rather than vibrational modes.
Why do coral grow slower?
Slower than what?
Why is the Lamborghini Murcielago slower?
Slower than what?
What is faster than a bird but slower than a snail?
nothing. that is impossible because if it is faster than a bird, then it isn't slower than a snail. and if it is slower than a snail, then it isn't faster than a bird.
How does a shark behave when it is sad?
it swims a little slower than normal it swims a little slower than normal it swims a little slower than normal
Which is not part of the equation for angular momentum?
Rotational speed. Rotational speed is typically used to calculate rotational kinetic energy rather than angular momentum, which is determined by rotational inertia and angular velocity.
