Not completely. There are many unstable atoms with a stable nucleus, starting with beryllium 7, and a few stable atoms with unstable nucleus.mpv_plate said:Helium nucleus is stable, also helium atom is stable. Stability of atom is given by stability of its nucleus.
mpv_plate said:Standalone neutron half life is 15 minutes and it is not related to half life of various nuclei.
I can't think of one, could you give an example?a few stable atoms with unstable nucleus.
All nuclei where electron capture is the only possible decay process, but I think those are quite rare.snorkack said:There are many unstable atoms with a stable nucleus, starting with beryllium 7
I am interested in an example here, too.a few stable atoms with unstable nucleus.
Bill_K said:I can't think of one, could you give an example?
snorkack said:Dysprosium 163.
Not sure whether others exist or whether Dy-163 is the only one.
No, but "a few" includes one.ZapperZ said:One isn't "many".
ZapperZ said:What makes Dy163 an "unstable atom with a stable nucleus"? What is the characteristic of such a thing?
They ##\beta^-## decay energy is not sufficient to produce a free electron. If the inner shells are free, on the other hand, the nucleus can do a ##\beta^-## decay and produce a bound electron. Therefore, the atom is stable, but the nucleus (without electrons) is not.ZapperZ said:What makes Dy163 an "unstable atom with a stable nucleus"? What is the characteristic of such a thing?
The half life of an alpha particle is the amount of time it takes for half of a given amount of alpha particles to decay into a different element. This decay process occurs naturally in radioactive elements.
To measure the half life of an alpha particle, you will need to perform experiments using a specific radioactive element. The decay rate of the alpha particles can be measured and used to calculate the half life.
The half life of an alpha particle can be affected by the type of radioactive element, temperature, and pressure. These factors can influence the decay rate of the particles and thus affect the half life.
The half life of an alpha particle is directly related to its stability. A shorter half life means the particle is less stable and will decay faster, while a longer half life means the particle is more stable and will take longer to decay.
The half life of an alpha particle is a characteristic property of a specific radioactive element and cannot be manipulated. However, scientists can use different techniques to alter the decay rate of alpha particles, which can indirectly affect the half life.