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An atom 134 84Po of decays by alpha decay Which atom is left after the decay?
Since an alpha particle contains 2 neutrons and 2 protons (for a total of 4 nucleons), you are supposed to subtract that from the nucleus. In other words, you will get isotope 171 76 (4 nucleons less, 2 protons less). APEX 171 76 Os
What represents alpha decay?
148/64 Gd ---> 144/62 Sm + 4/2 He (apple executive)
What happens to a radioactive material over time?
It disintegrates into its daughter nuclei that are much more stabler than the radioactive nuclei. If a sample of radioacictive material is left it will decay into another element over a period of time. Note that complete decay is not possible. A fraction of the original radioactive material will always remain in the sample.
When an atom undergoes radioactive decay when does it become a completely different element?
An atom of a given isotope will undergo radioactive decay whenever it feels like it. No joke. The nucleus of a radioactive isotope is unstable. Always. But that atom has no predictable moment of instability leading immediately to the decay event. We use something called a half life to estimate how long it will take for half a given quantity of an isotope to undergo radioactive decay until half the original amount is left, but this is a statistically calculated period. No one knows how long it will take a given atom of a radioactive isotope to decay, except that those with very short half lives will pretty much disappear relatively quickly.
The half-life of an isotope is the time required for half the nuclei in a sample to?
Half-life is the length of time required for half the atoms in a radioactive sample to decay to some other type of atom. It is a logarithmic process, i.e. in one half-life, there is half the sample left, in two half-lives there is one quarter the sample left, in three half-lives there is one eight left, etc. The equation is... AT = A0 2 (-T/H) ... where A is activity, T is time, and H is half-life.
An atom 134 84Po of decays by alpha decay Which atom is left after the decay?
Since an alpha particle contains 2 neutrons and 2 protons (for a total of 4 nucleons), you are supposed to subtract that from the nucleus. In other words, you will get isotope 171 76 (4 nucleons less, 2 protons less). APEX 171 76 Os
Is the atom left after decay often radioactive?
Yes, the atom left after decay is often radioactive because the decay process can lead to the creation of unstable isotopes that emit radiation. This radiation can continue to decay until a stable atom is formed.
What plus an alpha decays to a carbon plus a neutron?
This might be the stable isotope of beryllium, 9Be: alpha + 9Be -> 12C + n alpha: 2p + 2n Be: 4p + 5n left side: 6p + 7n C: 6p + 6n right side: 6p + 7n Incidentally, this would not be a decay, rather an transfer reaction, I think.
What represents alpha decay?
148/64 Gd ---> 144/62 Sm + 4/2 He (apple executive)
What happens to radioactice substances when they decay?
The atom that decays leaves emits some radiation, and leaves behind another type of atom (or atoms), with less mass (the mass of the original atom, minus the mass that left the atom). There are several common types of radioactive decay. In alpha decay, an alpha particle is emitted. This is two protons and two neutrons bound together. In beta decay an electron or positron is emitted. Excited nuclei may shed their excess energy by emitting a neutral gamma ray. Some nuclei even emit neutrons (the fission products in a nuclear reactor are especially prone to this). And sometimes the nucleus may grab an orbiting electron in "K-capture". Some of these events alter the nucleus's charge thus changing it into a different chemical element. In addition, the proton-to-neutron balance may be changed enough to make the new nucleus unstable so it decays again. In most cases the decay leaves the nucleus in an excited state which may destabilise it resulting in further decay too. It is not uncommon for a material to decay through several generations at hugely different rates. But eventually the nucleus settles down as a different chemical element, the orbiting electrons re-shuffle and, well, that's it. The substance therefore changes into another one. Since the processes are very specific for every isotope, the composition of an old rock, for example, can give us complete information about what was in it a thousand, a million, a billion years ago.
What is released from the nucleus during gamma decay?
Alpha decay means that an alpha particle (helium-4 nucleus) is emitted.Alpha decay means that an alpha particle (helium-4 nucleus) is emitted.Alpha decay means that an alpha particle (helium-4 nucleus) is emitted.Alpha decay means that an alpha particle (helium-4 nucleus) is emitted.
If an atom decays by gamma decay Which atom is left after the decay?
14 7 N
What is the symbol for Alpha Radiation?
The isotope radon-198 will alpha decay to polonium-194 as shown here: 86198Rn => 24He + 84194Po The radon is shown on the left, and the alpha particle, which is a helium nucleus, is shown of the right with the polonium.
Does a radioactive isotope decay at a varying rate from the time it forms?
The probability of decay of any particular atom is a constant. However, as time passes, the there are fewer atoms left to decay. So in that respect the number of decay event falls.
Discuss with the use of examples the main differences between alpha and beta decay?
In alpha decay, an alpha particle (a helium nucleus - 2p+ and 2n0) is emitted from the nucleus of an atom. In beta decay, a neutron turns into a proton and an electron, and the electron (beta particle) is emitted from the nucleus of the atom.
What happens to a radioactive material over time?
It disintegrates into its daughter nuclei that are much more stabler than the radioactive nuclei. If a sample of radioacictive material is left it will decay into another element over a period of time. Note that complete decay is not possible. A fraction of the original radioactive material will always remain in the sample.
Will the decay product ever rach to 100?
I assume you mean, that 100% of a product decays. In radioactive decay, in purely mathematical terms, this will never happen; but for practical purposes, after several half-lives elapse, the amount of remaining substance (of the original substance) is so small as to be insignificant for most practical purposes. Also, since a material is made up of individual atoms, the time will come when (once again, in a purely mathematical way) much less than one atom is left; what this means in practice is that the probability of even one atom being left becomes insignificant.
