What is the longest radioactive halflife?
First, it isn't very accurate to talk about a radioactive "element"; you should talk about radioactive isotopes. Different isotopes of the same element can have very different behavior in this sense. For example, hydrogen-1 and hydrogen-2 are stable, while hydrogen-3 is not (half-life about 19 years).
Individual atoms, in a radioactive isotope, will decay at a random moment. The half-life refers to how long it takes for half of the atoms in a given sample to decay (and convert to some other type of isotope).
Do alpha particles and helium atoms have same electrons?
No. The difference between them is that helium atoms have electrons, and alpha particles don't.
What can stop alpha particles?
A sheet of notebook paper will stop alpha particles. Depending on their energy, alpha particles, which are helium-4 nuclei (two protons and two neutrons), will only travel a few feet in air. Use the link below to learn more.
A neutron has no charge but its mass is almost the same as the of a?
proton. Neutrons and protons are both subatomic particles found in the nucleus of atoms, with similar masses but different charges. Neutrons have no charge and are crucial for stabilizing atomic nuclei.
Is alpha and beta decay are almost always accompanied by what?
Alpha and beta decay are often accompanied by the emission of gamma radiation. Gamma radiation is a high-energy form of electromagnetic radiation that helps to stabilize the nucleus after alpha or beta decay.
What did Rutherford discover or contribute to the model of the atom?
A short answer for the Rutherford atomic model: the atom is composed from a central part - a nucleus, positively charged, surrounded by electrons - very small negative charged particles.
Also Rutherford discovered atomic nucleus and the proton.
For most nuclear imaging studies, radionuclide is injected into the patient and the images are taken with a gamma camera suspended above the patient who will be lying on a table. The camera detects the gamma rays emitted from the radionuclide in the patient's body and uses this information to produce an image that shows the distribution of the radionuclide within the body. The image is recorded on film and is called a radionuclide scan.
What force or forces act on a comet?
Nothing fuels a comet. They are just ice balls orbiting the Sun forever (until they run into something). By the way, the tails of comets do not stream out behind them. The tails of comets always point away from the Sun.
222Rn emits a beta particle to produce what element?
When (^{222}Rn) emits a beta particle, it transforms into (^{222}Fr), which is Francium.
Which type of radiation alpha beta or gamma results in the greatest change in mass number?
alpha - 2 neutrons and 2 protons released or neutron collision with a fissionable nucleus resulting in the fissioning of the atom into two fission fragments and more neutrons creating two atoms each a little less than half the atomic mass of the original atom
What element is formed when 60CO emits a beta particle?
When 60Co decays by beta- decay it produces 60Ni.
Which equation represents the alpha decay of plutonium 244?
The equation for the alpha decay of plutonium-244 is:
[ ^{244}{94}Pu \rightarrow ^{240}{92}U + ^4_2He ]
Let us use the expression = time duration = number of half lives x half life
Given 40 = 4 x half life
So half life = 10 days.
Remaining = 1/16 = (1/2)4. So 4 half live have gone.
If the number of half lives is n then (1/2)n would remain.
What is the equation for the alpha decay of uranium -237?
The equation for the alpha decay of 233Pu:
94233Pu --> 92229U + 24He2+
where the alpha particle is represented as a helium nucleus.
Note that 233Pu decays by alpha decay with a probability of only 0.12%. The other 99.88% is Beta+ decay.
The half-life of a radioactive element is?
The time it takes for half of the atoms to decay, and become some other type of atom.
What does the half life of a radioisotope correspond to?
The length of time required for half of a sample of radioactive material to decay
What is the path of a subatomic particle called?
Usually, the path that a subatomic particle takes is called just that, its path. Certain terms are used for specific circumstances, though, such as; orbit, when you're talking about atomic electrons; track, when you're referring to a particle's path in a cloud or bubble chamber; and beam, when referring to the path of a group of similar particles in an accelerator.
What is the nuclear equation for the beta decay of Sn-126?
The nuclear equation for the beta decay of Sn-126 is: Sn-126 -> Sb-126 + e- + anti-neutrino
Why dont atomic bombs destroy ozone?
Atomic bombs primarily release energy in the form of heat and light, which does not directly affect ozone molecules. Ozone depletion is mainly caused by chemicals like chlorofluorocarbons (CFCs) that break down ozone in the stratosphere. Therefore, atomic bombs do not contribute to ozone depletion.
How do minerals containing uranium darken photographic film?
Uranium minerals emit radiation that causes silver halide crystals in photographic film to undergo a process known as fogging. This fogging results in darkening of the film, affecting the quality of images produced.
What is the latest discoveries in physics?
New discoveries are happening all the time in all branches of research. Not a day or week goes by that something new is discovered: be it in branches of the physical sciences or biological sciences. Most discoveries don't normally come to the attention of the general public.
There is so much new knowledge that it exceeds all the information in the Library of Congress several times over on an annual basis. Things that peak the publics interest are usually the result of some major publication i.e magazine, newspaper or electronic media printing something which goes viral or some new technological application from the physical or biological sciences.
What must occur before a radioactive atoms ceases to undergo further radioactive decay?
Before a radioactive atom ceases to undergo further radioactive decay, it must reach a stable configuration or decay into a non-radioactive isotope through the emission of particles or energy. This process continues until the atom reaches a state of stability where it no longer emits radiation.
The strongest force in nature is the one?
The "strong force" which binds nucleons (protons and neutrons) together was traditionally considered the strongest force. It is much stronger than the other three traditional forces: the weak force; the electromagnetic forces; gravitation. With the more recent research on quarks, however, it seems that this strong force is just a side effect of an even stronger force that acts between quarks.