0
In Beta- decay, a neutron is converted into a proton, and an electron and electron anti-neutrino are emitted. The Atomic Number goes up by one, and the Atomic Mass Number stays the same. For instance, 6C14 becomes 7N14 plus one electron and one electron anti-neutrino.
In Beta+ decay, a proton is converted into a neutron, and a positron and electron neutrino is emitted. The Atomic Number goes down by one, and the Atomic Mass Number stays the same. For instance, 6C11 becomes 5B11 plus one positron and one electron neutrino.
Isotopes that decay by Beta+ decay also tend to decay by Electron Capture, a process where an inner K shell electron is absorbed by the nucleus, changing a proton into a neutron and emitting a neutrino. The isotope conversion process would be the same as for Beta+, above.
In Alpha decay, a Helium nucleus (two protons and two neutrons) are emitted. The Atomic Number goes down by two, and the Atomic Mass Number goes down by four. For instance, 92U238 becomes 90Th234 plus one Helium nucleus
What else can I help you with?
What is the similarity of radioactive isotope and radioactive dating?
Both radioactive isotopes and radioactive dating rely on the process of radioactive decay. Radioactive isotopes decay at a known rate, allowing scientists to measure the passage of time based on the amount of decay that has occurred. Radioactive dating uses this decay process to determine the age of rocks and fossils.
How are radioactive isotopes used determine the absolute age of igneous rock?
Answer : When the isotopes decay, scientists can find out how old the rock is depending on the radioactive isotope's half-life. Explanation: Radioactive isotopes are unstable and will decay. For example, when humans die carbon-14 decays. The isotopes will decay into a stable isotope over time. Scientists can tell how old the rock was from looking at the radioactive isotope's half-life, which tells them how long it would take for there to be half the radioactive isotope and half the stable isotope. At the next half-life there will be 25% of the radioactive isotope and 75% of the stable isotope. At the next half life there will be 12.5% radioactive and 87.5% stable. Example: Carbon-14 is a radioactive isotope with a half life of 5,730 years. How old would carbon-14 be when there is 75% carbon-14 in the rock? 75% is half of the time before the half-life, so it would be 2,365 years. Hope this helps. Half life helps scientists find how much the isotope has decayed and the age of the rock.
When an isotope undergoes beta decay which of the following does NOT change?
The answer is c., The mass number.Check step 5 below.Let's walk through balancing a nuclear equation involving beta decay. We are going to figure out a balanced equation for thorium-2341. You will need to find the atomic number for thorium (234) and the chemical symbol (Th).2. We know that this is undergoing beta decay, so one of the products will be decaying.3. We now need to set up the equation. We are going to use the followingZ=the atomic number of the product isotopeA=the mass number of the product isotopeX-the chemical symbol of the product isotope4. Let's now set up the equation:5. We will now figure out the mass number (A) of the product. We will do this as follows:234=mass number of thorium0=mass number of beta particle234=A+0234=A6. We will now figure out the atomic number (Z) of the product. We will do this as follows:90=Z+(-1) (complete this by subtracting -1 to each side of the equation)90-(-1)=Z+(-1) - (-1)91=Z7. So far we have this:8. Now, we need to figure out the product element (X). We do this by looking for the element that has an atomic number of 91. This is protactinium (Pa). So, the complete balanced equation will look like this:You have balanced an equation using beta decay.
How do you find out the length of alpha helix and beta helix?
This is quite simple. Using stoichiometry to keep track of units, simply take the number of amino acids in the particular alpha helix and multiply by 15 angstroms. This is the length the alpha helix is advanced along the length axis by each additional A.A. For a beta helix it become more difficult however and you must know how many sheets you are taking into account.
How do you find the half life in carbon dating?
You do not find the half life in carbon dating. The half lives of carbon isotopes are derived by studying their radioactive decay. For carbon dating, the isotope used is Carbon-14, which has a half life of 5,700 years.
What atom is left when a nucleus disintegrates?
There are a number of possibilities as regards what happens when a nucleus "disintegrates" as was asked. There are a number of way that a nucleus can disintegrate, or change, so let's look at those. First there is spontaneous fission. You're familiar with fission because that's what happens in nuclear reactors, to name one thing. But in spontaneous fission, no neutron capture precedes the fission event. The atomic nucleus just "splits" on its own. Uranium, plutonium and a few other elements can do this, and there are a number of different possibilities as regards what fission fragments will result. Some unstable nuclei undergo what is called alpha decay. The nucleus dumps an alpha particle, which is actually a helium-4 nucleus, and is composed of a pair of protons and a pair of neutrons. There are a number of different alpha emitters known, and radon-222 is an example. It turns out that this isotope of radon appears when radium-226 undergoes alpha decay. In the event beta decay occurs, nuclear changes follow. There are two different types of beta decay, and they are beta plus decay and beta minus decay. An example is caesium-137, which will undergo a beta minus decay. It is sodium-22 that undergoes beta plus decay. As you can see, there are several different "disintegration modes" possible in nuclear decay. And there are basket full of possibilities when we look through them, so we can't list them all here. But we can give you links to each of these decay modes, and you'll find them below.
What does oxygen-21 decay into?
The only reference I could find was Beta minus decay into Fluorine 21
What is the decay element of uranium?
It is not yet discovered since all of the uranium isotopes are having half life for several millions of years. We would be able to find it after atleast 700 millions of years.
Why we find alpha beta and gamma rays in many radioactive elements?
That's what an atom emits when it decays.
Why does decay occur?
Radioactive decay is a natural process that occurs because a given atomic nucleus is unstable. The instability in the nucleus will eventually result in some kind of nuclear change (depending on the atom), and we call this radioactive or nuclear decay. Different radionuclides undergo different types of decay that include spontaneous fission, alpha decay and beta decay. Each of these is explained in separate questions, and they already have modestly good answers. You'll find links to those questions below, as well as links to some other Related questions.
Americium-241 is used in some smoke detectors It is an alpha emitter with a half-life of 432 How long will it take in years for 31.0 of an Am-241 sample to decay?
To calculate the time it takes for 31.0 g of Am-241 to decay, you can use the radioactive decay formula. First, find the decay constant (λ) by ln(2) / half-life. Once you have the decay constant, you can use the formula N(t) = N0 * e^(-λt), where N(t) is the remaining amount of the isotope, N0 is the initial amount, and t is the time. Solve for t to find how long it will take for 31.0 g of Am-241 to decay.
Why do you find all three alpha beta and gamma in many radioactive elements?
Because many radioactive elements undergo what is called a decay chain, or multiple decays until they finally become stable. For instance Thorium-232 undergoes a number of alpha and beta decays until it finally becomes stable as Lead-208. As such, while a compound may contain mostly Thorium-232, there may be a minute amount of other particles resulting from the decay of Thorium-232 producing different radioactive particles from Thorium-232. Another reason could be that certain radioactive particles can undergo more than one type of decay. For instance, Bi-213 can undergo either alpha or beta decay, and thus a sample of Bi-213 would emit both particles. Lastly, any particle that undergoes gamma decay will eventually undergo some other type of radioactive decay, since gamma ray emission does not actually change the atomic # of the element and thus does not make it eternally stable. Thus compounds producing gamma rays will always produce some other type of radiation as well, for instance Cobalt-60 produces gamma rays and beta particles
Find the missing angles for triangle ABC given that a equals 24 b equals 36 and c equals 19?
Trig. Use law of cosines in degree mode. First find alpha; the angle opposite a a^2 = b^2 + c^2 - 2bc*cos(alpha) 24^2 = 36^2 + 19^2 - 2(36)(19)cos(alpha) 576 = 1657 - 1368cos(alpha) subtract 1657 from both sides( order of operations ) -1088 = -1368cos(alpha) 0.7902046784 = cos(alpha) arccos(0.7902046784) = alpha 38 degrees = alpha ( angle opposite side a ) find beta; angle opposite side b b^2 = a^2 + c^2 - 2ac*cos(beta) 1296 = 937 - 912cos(beta) 359 = -912cos(beta) -0.3936403509 = cos(beta) arcos(-0.3936403509 = beta 113 degrees = beta ( angle opposite of b ) easy thing to get last angle 180 degrees - 38 degrees - 113 degrees = 29 degrees; which is gamma; angle opposite c alpha( angle opposite a side = 38 degrees beta( angle opposite b side ) = 113 degrees gamma(angle opposite c side) = 29 degrees
Why does radioactive occur?
Radioactive decay is a natural process that occurs because a given atomic nucleus is unstable. The instability in the nucleus will eventually result in some kind of nuclear change (depending on the atom), and we call this radioactive or nuclear decay. Different radionuclides undergo different types of decay that include spontaneous fission, alpha decay and beta decay. Each of these is explained in separate questions, and they already have modestly good answers. You'll find links to those questions below, as well as links to some other Related questions.
How do you use the word half-life in a sentence?
"The radioactive decay of any atom is associated with the emission of a charged particle (alpha or positive or negative beta) from or the capture of an electron by the nucleus."Nucleonics Fundamentals by David B. Hoisington 1959; page 62.
What is the similarity of radioactive isotope and radioactive dating?
Both radioactive isotopes and radioactive dating rely on the process of radioactive decay. Radioactive isotopes decay at a known rate, allowing scientists to measure the passage of time based on the amount of decay that has occurred. Radioactive dating uses this decay process to determine the age of rocks and fossils.
What does the 'He' stand for in an alpha decay?
In any chemical reaction, including an alha decay, "He" stand for Helium, which is element #2. Helium is one of the Noble Gases. you will find it at the top right of the Periodic Table of the Elements.
