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What wavelength of light in nanometers must be absorbed to promote the electron in Li2 plus from n 1 to n 4?
Get Hertz with this formula. Z = 3 for Li.
Hertz = (3.29 X 1015 s -1)*Z2*(1/Nf2 - 1/Ni2)
We will reverse initial and final to avoid negatives.
Hertz = (3.29 X 1015 s -1)(32)(1/12 - 1/42)
Hertz = (9.87 X 1015)(15/16)
= 9.25 X 1015 Hertz
------------------------------Now, this formula.
Wavelength = speed of light/Hertz
Wavelength = 2.998 X 108 m/s/9.25 X 1015 Hertz
= 3.24 X 10 -8 meters (109/1 meter)
= 32.4 nanometers
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What else can I help you with?
How can different interventions promote positive outcomes for young people?
4.2 Compare, giving examples, ways in which services for children, young people and their carers take account of and promote equality, diversity and inclusion to promote positive o utcomes.
What values does fire promote?
no one knows
Definition of Non-acnegenic or non-comedogenic?
Non-acnegenic means it does not cause or promote acne. Non-comedogenic means it does not cause or promote comedones (blackheads).
What is a word that means the same or almost the same as advance?
promote
What does promote 2 for 1 means in exploration carry?
A 2 for 1 promote in an exploation carry simply means that to acquire one part working interest you have to pay to the value of two parts.
Does all atoms emit the same wavelengths of light?
Not really. We could argue that atoms, at one time or another, absorb a little bit of light of any wavelength, but the most likely scenario is that the atom absorbs light that is of the same amount of energy as the place the atom would use it- in the promotion of an electron. However much energy is required to promote an electron up another level corresponds to the wavelength of light absorbed. Einstein won his Nobel Prize answering a question similar to this where atoms absorb light of a particular wavelength, then release an electron afterward to make electricity. This is known as the "Photoelectric Effect" and we all benefit from it when we use solar cells. Another way to think of the way light is selectively absorbed is to imagine a radio. A radio antenna is exposed to a bunch of signals, but only the station we tune to ends up coming from the speakers. By having electrons arranged in a particular way, an atom acts like a radio receiver- it only receives the signal it is tuned to. Hope that helps and best of luck in your studies! Bill
Can two photons interact with an electron simultaneously?
Yes, two photons can interact with an electron simultaneously. This can occur through a process called two-photon absorption, where the combined energy of the two photons is absorbed by the electron to promote it to a higher energy state.
Why is the light given off as fluorescence always of lower wavelength than the light absorbed?
It isn't. The usual way fluorescence works is indeed that a high energy light promotes an electron to a high energy state and it then cascades down through the energy levels giving off low energy quanta of light at each step. However there is the situation where low energy light input can act as an energy pump and promote an electron in a series of energy steps to a high energy state which it then releases in a single high energy drop emitting a quantum of light of a higher energy than the input.
Is paraffin wax absorbed into the skin?
No, paraffin wax is not absorbed into the skin. It creates a barrier on the skin's surface, helping to retain moisture and promote hydration. When the wax is removed, any moisture that the skin has absorbed during treatment is also removed.
Why electron affinity is negative?
It is NOT negative (for the first IE). Because Be's configuration is 1s2 2s2, we observe that it has no vacant orbital to accommodate an electron, meaning that to insert an electron, it has to go into a new sub-orbital, the higher-energy 2p. Hence, you need energy to promote this electron to a 2p level to force Be to accept it.
What is beryllium's electron affinity?
It is NOT negative (for the first IE). Because Be's configuration is 1s2 2s2, we observe that it has no vacant orbital to accommodate an electron, meaning that to insert an electron, it has to go into a new sub-orbital, the higher-energy 2p. Hence, you need energy to promote this electron to a 2p level to force Be to accept it.
Why is the element xenon unreactive?
Xenon is unreactive because it has a full outer electron shell, making it very stable and reluctant to gain, lose, or share electrons with other elements. This stable electron configuration makes it difficult for xenon to form chemical bonds with other elements, resulting in its inertness.
Why doesn't green light promote photosynthesis?
Green light does not promote photosynthesis because it is reflected off of a plants leaves. While most plants absorb all other wavelengths of electromagnetic rays from the sun, they reflect the wavelength for green light.
What does saturated fiber mean?
Saturated fiber refers to fiber that has absorbed as much water as it can hold. This can help promote feelings of fullness and aid in digestion. Examples of saturated fiber include fruits, vegetables, and whole grains.
Does promote have a prefix?
Yes, promote does have a prefix. Promote's prefix is pro-.
Why internet better than other communication mediums?
promote yourself promote your job promote your advertisement promote your house
What is the prefix of promote?
Promote is a root word itself.
