Radioactive decay of Carbon 14

In summary, during the nuclear decay of Carbon 14 into Nitrogen 14, one electron is released and one neutron turns into a proton, creating an electron and an antineutrino. The Nitrogen atom initially has 6 electrons, but it will quickly collect an additional electron to become a neutral atom with 7 electrons. The released electron is not one of the original orbital electrons, and generally there will be 6 electrons left in the Nitrogen atom after the decay. This may potentially disturb the remaining orbital electrons, but it is not a rule.
  • #1
Electroguru
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Alright, a very simple question here. I am reading about nuclear decay of Carbon 14 into Nitrogen 14. I understand how one electron is released and subsequently one neutron turns into a proton, but I am curious about how many electrons are left with the Nitrogen atom. I want to believe five, as that Carbon 14 would have had 6 initially. Is this correct?

I believe my root problem here is that I don't thoroughly understand beta
decay.

Any body want to share some insight?
 
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  • #2
Electroguru said:
I understand how one electron is released and subsequently one neutron turns into a proton,
One neutron turns into a proton plus an electron plus an antineutrino. The electron and the antineutrino are created in the decay.
 
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  • #3
Note that the electron (or positron) in a beta decay will generally escape from the atom, leaving an ion behind. The Q-values are typically much larger than the binding energy.
 
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  • #4
The nitrogen atom initially has the same electrons as the carbon atom had - 6. Typically it will quickly collect an electron from the environment to become a neutral nitrogen atom with 7 electrons.
 
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  • #5
Your basic misconception is I think that the electron released via the nuclear reaction is one of the orbital electrons of the original C14 atom. It is not; it is created in the nucleus and flies off, although it may potentially disturb the orbital electrons, that is not the rule. Generally speaking there would be 6 electrons left (assuming a neutral atom). The N14 atom would later presumably gain the 7th electron somehow.
 

1. How does Carbon 14 decay?

Carbon 14 decays through a process called beta decay, where a neutron in the nucleus of the atom is converted into a proton, releasing an electron and an antineutrino. This changes the atomic number of the atom from 6 to 7, making it a different element, nitrogen.

2. How long does it take for Carbon 14 to decay?

The half-life of Carbon 14 is approximately 5,730 years. This means that it takes 5,730 years for half of the original amount of Carbon 14 in a sample to decay into nitrogen.

3. What is the significance of Carbon 14 in dating objects?

Carbon 14 dating is a method used to determine the age of organic materials up to 50,000 years old. This is because living organisms constantly absorb Carbon 14 from the environment, and when they die, the amount of Carbon 14 begins to decrease as it undergoes radioactive decay. By measuring the remaining amount of Carbon 14 in a sample, scientists can estimate how long ago the organism died.

4. Can Carbon 14 be used to date any type of material?

No, Carbon 14 dating can only be used on organic materials such as wood, bone, and cloth. This is because these materials contain Carbon 14 from the living organisms that they were once a part of. Inorganic materials, such as rocks or minerals, do not contain Carbon 14 and therefore cannot be dated using this method.

5. How accurate is Carbon 14 dating?

Carbon 14 dating has an accuracy of about ±40 years for samples up to 26,000 years old. For older samples, the accuracy decreases due to the lower levels of Carbon 14 remaining and the potential for contamination. However, with proper calibration and careful sample selection, Carbon 14 dating can provide accurate and reliable results.

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