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# The ratio of energy to frequency for a given photon gives?

Updated: 4/28/2022

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11y ago

Planck's constant.

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11y ago

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Q: The ratio of energy to frequency for a given photon gives?
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### What happens when a hydrogen atom changes from the excited state to the ground state?

It gives off a photon of energy.

### When the electrons are of an excited atom return to a lower energy state the energy emitted can result in the production of?

It depends on which state they fall from and in what element. The distance between the first and second energy level is large and all other jumps are even larger, also must questions involve Hydrogen. UV or X-Ray fro sure, probably X-Ray. To actually find out you will need to do the following.

### Why do waves with frequencies high than visible light hurt us while those with lower frequencies do not affect us?

Lower frequency waves have less strength to penetrate. How bad a wave is all depends on how well it penetrates our bodies. Visible light doesn't penetrate our skin, but UV rays (higher than visible) can go through our skin, making it "bad" for us. High frequency waves have more energy and move faster which causes this penetration.

### What happens when the electrons return from the excited state to the ground state?

it looses energy , it gives off light in the form of a single photon.

### The line emission spectrum of an atom is caused by the energies released when electrons?

The line emission spectrum of an atom is caused by the energies released when electrons fall from high energy level. It goes down to a low energy level and the extra energy it had from higher level is released as light.

### Why does sodium vapor emit only certain frequencies of visible light?

It is because the electrons surrounding an atom, say sodium, can only exist at certain energy levels. When a photon (packet of light energy) hits an orbiting electron it only gives energy to that electron if the energy of the photon is exactly enough to move the electron to a higher energy level, if not it doesn't effect the electron. As the energy of a photon is directly proportional to the it wavelength, only certain wavelengths affect an atom's electrons. When they do effect the electrons the photon is absorbed, giving the absorption spectrum. Emission spectra are the reverse of this process, when an electron cascades back down to its lowest possible energy state after this photon interaction it gives out certain frequencies of light. The energy of this light will be equal to the energy absorbed, so the photons emitted will be equal to the photons absorbed which is why emission spectra look like the inverse of an absorption spectrum.

### Do waves with a shorter wavelengths travel faster than waves with longer wavelengths?

The physical length, short wavelengths are shorter than long wavelengthsThe frequency, short wavelengths are higher frequency than long wavelengthsThe energy per photon, short wavelengths have more energy per photon than long wavelengths

### What does the electron arrangement of any particular atom show?

The emission spectrum is your visible light spectrum, so it tells you your wavelength and frequency. Knowing this information allows you to calculate your photon energy (Eph = hv, where v = frequency and h = plank's constant). Hence, you know how much energy the electrons have and how much energy it takes to excite them from one energy level to the next (Eph).

### What type of energy is given off by burning coal?

when burning coal it gives off heat energy

### What energy is given off by the sun?

The sun gives solar energy which is made from the particles of heat that collide..

### How is light produced in a light bulb?

When energy is given to the neon gas the electrons in its atoms become 'exited' and move up to a higher orbital (you could think of this like getting in a lift and moving from the ground level to the 3rd floor) As with anything what goes up it must come down, and as energy was needed to send it up to the higher orbital, energy is given out when it falls back down to its 'ground' level. This energy is given out in the form of a photon (a packet/wave of energy) depending on where it has come down from depends on the frequency of the wave and this in turn gives the colour. In other words if an electron gets exited to the 3rd orbital when it returns to the ground level it will give out one colour and if it gets exited to the 4th orbital when it falls it will give out a different colour. Science-teacher

### How is light is produced in a neon bulb?

When energy is given to the neon gas the electrons in its atoms become 'exited' and move up to a higher orbital (you could think of this like getting in a lift and moving from the ground level to the 3rd floor) As with anything what goes up it must come down, and as energy was needed to send it up to the higher orbital, energy is given out when it falls back down to its 'ground' level. This energy is given out in the form of a photon (a packet/wave of energy) depending on where it has come down from depends on the frequency of the wave and this in turn gives the colour. In other words if an electron gets exited to the 3rd orbital when it returns to the ground level it will give out one colour and if it gets exited to the 4th orbital when it falls it will give out a different colour. Science-teacher