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Radioactive Decay

Also known as nuclear decay, radioactive decay is the decrease of radiation through time.

540 Questions

Are gamma rays associated with radioactive decay?

Yes, gamma rays are often associated with radioactive decay. During the decay process, some unstable atomic nuclei release excess energy in the form of gamma rays, which are high-energy electromagnetic waves. Gamma rays are one of the three types of radiation emitted during radioactive decay, the other two being alpha and beta particles.

What did Marie and Pierre do with radioactive decay?

Marie and Pierre Curie studied radioactive decay to discover the elements polonium and radium. They found that certain elements undergo spontaneous decay, emitting radiation in the process. Their work laid the foundation for the field of nuclear physics.

What is a by product of radioactive decay?

The 3 things that can happen during radioactive decay is the 3 parts of decay: Alpha decay, Beta decay, and Gamma decay. In alpha decay, which is the weakest part of decay, it has a positive helium neuclus(2 protons and 2 neutrons), and the particles will burn your skin, but can be easily stopped by a peice of paper. This is the most ionising as the helium nucleus can take electrons from other atoms and make them unstable. This can give rise to cancers as it distorts cells. In Beta decay (an electron or a positron) is emitted. In the case of electron emission, it is referred to as "beta minus" (β−). It can be stopped by 3mm of aluminum. Gamma decay, which is the strongest, can only be stopped by 3cm of lead. It has electromagnetic waves, it contains the most energy, and therefore is the most penetrating, but normally it just passes straight through the human body. Radioactive decay can be very harmful, and its best to stay away. This question has been anwsered by Rae-Ann Salisbury.

What year did radiation poisoning start?

The first documented cases that became known by the public were in 1917 involving the Radium Girls: low paid women that painted a luminescent radium/zinc based paint on clock and instrument dials so they could be read at night.

However cases among scientists go back to as early as 1897 when Marie Curie began her work separating radioactive elements from uranium ore.

Note: early life about 3 billion years ago was sometimes exposed to high levels of radiation when naturally occurring uranium fission reactors spontaneously formed in some locations that could have also caused radiation poisoning. However the concentration of uranium-235 in natural uranium soon dropped too low for such reactors to form after that.

How old is the kaaba by carbon dating?

Carbon dating is not applicable to the Kaaba as it is made of stone. The Kaaba is estimated to have been established around 2,000 BCE by Prophet Ibrahim.

How do you calculate the initial and final mass for a radioactive decay equation?

To calculate the initial and final mass in a radioactive decay equation, you would typically use the equation: final mass = initial mass * (1 - decay constant)^time. The initial mass is the quantity of the radioactive substance at the beginning, while the final mass is the amount after a specified amount of time has passed.

What is the final result of radioactive decay?

The final result of radioactive decay is a stable daughter product that is no longer radioactive. This process involves the emission of radiation in the form of alpha or beta particles, as well as gamma rays, until the original radioactive isotope reaches a stable state.

Are there any non examples of radioactive decay?

Nuclear fusion and nuclear fission are processes that involve nuclear reactions but are not examples of radioactive decay. Chemical reactions, such as burning wood, do not involve nuclear processes and are also not examples of radioactive decay.

How does carbon dating prove a young earth?

Carbon-dating can not be used to prove the age of the earth, so it can not be used either to prove a "young earth" nor to support the scientific age of the earth. Carbon-dating is useful for archaeology, where it can date evidence of human artefacts up to fifty thousand years old.

Some less less informed "Young Earth" creationists do believe that carbon-dating was used to date the earth. They attempt, unsuccessfully, to undermine the science of carbon-dating in the belief that by doing so they undermine the scientific age of the earth, rather than because they constructively prove their point.

The best estimates of the age of the earth have been arrived at by radioactive dating, but not by carbon-dating. Had techniques of radioactive dating not been invented, other known methods of dating the earth would prove that the world is more than a few million years old. Some of these are described in the related question, attached below.

What do scientists use to calculate age when a fossil is too old for carbon dating?

Scientists use techniques such as uranium-lead dating or potassium-argon dating to determine the age of fossils that are too old for carbon dating. These methods rely on the radioactive decay of specific isotopes within the rocks surrounding the fossil to estimate its age.

How can coin- tossing simulate radioactive decay?

Coin-tossing can simulate radioactive decay by assigning a probability of heads or tails to represent decay or stability of a radioactive nucleus. Consistent with the decay probability of a radioactive substance, you can randomly flip the coin to determine decay events over time. Over multiple throws, you can track the number of heads to emulate the decay rate of a radioactive substance.

What is the nuclear decay equation for carbon 11?

The nuclear decay equation for carbon-11 is:

[ _{6}^{11}C \rightarrow {7}^{11}N + e^{+} + \nu{e} ]

where ({6}^{11}C) is the carbon-11 nucleus, ({7}^{11}N) is the nitrogen-11 nucleus, (e^{+}) is a positron (positive electron), and ( \nu_{e} ) is an electron neutrino.

How is Radioactive decay used?

Radioactive decay is used in various applications, such as dating rocks and fossils, conducting medical imaging (e.g. PET scans), generating electricity in nuclear power plants, and sterilizing medical equipment. The rate at which radioactive isotopes decay can provide valuable information about the age and composition of materials.

What is the nuclear decay equation for americium-244?

  • Americium is a transuranic radioactive chemical element that has the symbol Am and atomic number 95.
  • Its most common isotopes are 241Am and 243Am.
  • 241Am decays by emission of an Alpha particle to 237Np; the half-life of this decay is 432.2 years. 241Am95 (by Alpha decay) ------ 237Np93
  • Refer to link below for more information.

What is the nuclear decay equation for fluorine-17?

The equation for the beta decay of 17F: 917F --> 817O+ 10e + ve

where the 10e is a positive beta particle or positron.

What is the nuclear decay equation for selenium-75?

The nuclear decay equation for the decay of selenium-75 (75Se) by beta decay is:

( ^{75}{34}Se \rightarrow ^{75}{35}Br + e^- + \overline{\nu_e} )

This equation represents the transformation of a selenium-75 nucleus into a bromine-75 nucleus, an electron, and an electron antineutrino.

Why is carbon dating ineffective in determining the age of a dinosaur bone?

Carbon-14 isotope dating is only effective up to about 70,000 years. Dinosaur bones are at least 65 million years old. Elements with much longer half-lives are used to radiometrically date rock associated with dinosaur remains.

Is carbon dating possible in coins?

Yes, carbon dating can be used on coins that contain organic materials, such as wooden or textile components. Non-organic materials in the coins, like metals, would not provide accurate dating through carbon dating.

When does radioactive decay stop?

Radioactive decay does not entirely stop. It continues until all the unstable radioactive isotopes have decayed into stable isotopes. The rate of decay may decrease over time, but it never completely stops.

What type of nuclear decay does Uranium undergo?

Uranium has a different decay chain/series for its different isotopes. Uranium 238 for example first decays to thorium 234 through alpha decay while U235 alpha decays to thorium 231. Both have different half lifes which can be found on a natural decay series chart for the said element. The thorium in either case then beta decays to another element.

Where can this radioactive decay data be found?

You can find radioactive decay data in scientific databases such as the National Nuclear Data Center (NNDC), the International Atomic Energy Agency (IAEA) library, or scientific journals that publish research on nuclear physics and radiochemistry. Additionally, some universities and research institutions may have their own databases or resources available.

What kind of radioactive decay does carbon 14 go under?

Carbon-14 undergoes beta decay, where a neutron in the carbon-14 nucleus is transformed into a proton, resulting in the emission of a beta particle (an electron) and an antineutrino. This process transforms carbon-14 into nitrogen-14.

Nuclear decay reaction of carbon 14?

Carbon-14 undergoes beta decay, transforming into nitrogen-14 by emitting a beta particle (an electron) and an antineutrino. This process occurs naturally over time in organic material, allowing for radiocarbon dating to determine the age of archaeological artifacts and fossils. The decay of carbon-14 follows a predictable half-life of approximately 5,730 years.