Calculate Wavelength of 3.85 MeV Gamma Radiation from Technetium-99

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In summary, the conversation is about the energy and wavelength of a photon of gamma radiation emitted by the decay of technetium-99 with a specific energy of 3.85 MeV. The conversation also touches on the guidelines for posting in a forum and the use of units in solving equations.
  • #1
missy~needs~help
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Okay so I have this question...

A photon of gamma radiation emitted by the radioactive decay of technetium-99 has an energy of 3.85 MeV. This radiation has a wavelength of

a) 5.17x10^-26m
b) 3.23x10^-13m
c) 3.10x10^12m
d) 9.29x10^20m

Can anyone explain it...no idea how to even start it!:confused:
 
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  • #2
Turn to the page on your text that first talks about energy and wavelength relationships for EM waves. Tell us what you find and how you plan to proceed.

We can't help you unless you help yourself. Please read the guidelines for posting in this forum.
 
  • #3
I figure...that it has something to do with
E= hc/T
 
  • #4
That's a start.

What do the various symbols in that equation represent?

And secondly what have you learned about units when it comes to solving equations?
 

FAQ: Calculate Wavelength of 3.85 MeV Gamma Radiation from Technetium-99

What is the formula for calculating the wavelength of 3.85 MeV gamma radiation from Technetium-99?

The formula for calculating the wavelength of gamma radiation is: λ = h / (E * c), where λ is the wavelength in meters, h is Planck's constant (6.626 x 10^-34 joule seconds), E is the energy in electron volts (eV), and c is the speed of light (3.00 x 10^8 meters per second).

How do you convert 3.85 MeV to electron volts (eV)?

To convert from MeV to eV, you can multiply the MeV value by 1,000,000. Therefore, 3.85 MeV is equivalent to 3,850,000 eV.

What is the energy of Technetium-99 in electron volts (eV)?

The energy of Technetium-99 is 3.85 MeV, which is equivalent to 3,850,000 eV.

What is the speed of light (c) in meters per second?

The speed of light is 3.00 x 10^8 meters per second. This is a constant value that is used in many scientific calculations.

How does the wavelength of 3.85 MeV gamma radiation from Technetium-99 compare to other types of radiation?

The wavelength of gamma radiation from Technetium-99 is much shorter than other types of radiation, such as visible light or radio waves. This is because gamma radiation has a higher energy and shorter wavelength than these other forms of electromagnetic radiation.

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