17 Questions
What happens when a sodium atom at ground state absorbs a 589nm photon?
The electron transitions to a higher energy orbital
Which type of molecular orbital is associated with high energy?
Antibonding
What type of electrons are generally involved in energy absorption related to bonding orbitals?
s and p electrons
In absorption spectroscopy, what happens when the energy of the photon absorbed by an atom increases?
The wavelength of the photon decreases
What effect is observed when molecular orbitals are formed at lower energy levels than the original atomic orbitals?
Fluorescence
Which of the following statements about Beer's Law is correct?
It states that the total absorbance is the sum of the absorbances of individual absorbing species.
In the Bohr model of the atom, what does the principal quantum number (n) represent?
The distance of the electron from the nucleus and its energy level.
What is the maximum number of electrons that can occupy the d orbitals in an atom?
10
Which of the following statements about the absorption of light by atoms is correct?
An electron can change energy levels only if the absorbed photon has the exact energy difference between the two levels.
In the context of molecular absorption spectroscopy, what does the term 'independent' refer to?
The absorbing species do not interact with each other.
What is the process by which an excited atom or molecule returns to its ground state, emitting a photon?
Fluorescence
Which of the following statements about exocyclic double bonds is correct?
They increase the maximum absorption wavelength (λmax) by 5 nm
How does the solvent affect the absorption spectrum of a compound?
Polar solvents cause broader peaks without fine structure in the absorption spectrum
Which of the following statements about non-polar solvents is correct?
They do not form hydrogen bonds with the solute, so fine structure is often observed
Which of the following equations relates the energy of radiation to its frequency and wavelength?
$E = hv = \frac{hc}{\lambda}$
What is the relationship between wavenumber and frequency?
Wavenumber is directly proportional to frequency
What condition must be satisfied for absorption of radiation to occur in a molecule?
There must be an exact match between the frequency of the applied radiation and the frequency of the bond vibration
Explore the absorption of photons by sodium atoms, causing transitions between different energy levels. Learn about how energy of a photon is related to its frequency and wavelength. Dive into the concept of atomic orbitals in molecular bonding.
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