0
Atomic nuclei that are unstable and decaying are said to be radioactive. Radioactive decay involves alpha, beta and gamma particle emissions.
Kianna Gislason
Add your answer:
Earn +20 pts
What happens when an unstable nucleus undergoes radioactive decay?
Particles or electromagnetic radiation are emitted.
Identify the resulting nucleus when uranium 238 undergoes 5 successive decay series?
226Ra
Which particle is emitted from a hydrogen-3 nucleus when it undergoes radioactive decay?
beta, aka an electron.
What part of an atom causes radioactivity?
It is the nucleus of the atom that undergoes change during radioactive decay.
When does radioactivite decay occur?
Radioactive decay happens in an unstable isotope of a given element, as the isotope decays radiation is given off. As for when exactly, the decay of a nucleus is spontaneous and random so averages are used, these averages are different for different isotopes, but are measured as the "half life" (the time it takes for half the nucleus to decay).
When an unstable magnesium nucleus undergoes gamma decay the nucleus formed is that of what?
Magnesium
What happens when an unstable nucleus undergoes radioactive decay?
Particles or electromagnetic radiation are emitted.
How is a stable nucleus different to an unstable nucleus?
A stable nucleus is one which will not decay, whereas an unstable nucleus will decay at some point, which cannot be predicted as decay is a random process, by alpha or beta decay.
When an oxygen19 nucleus undergoes beta decay the nucleus formed is that of?
Fluorine
The nucleus of a radium 226 atom is unstable which causes the nucleus to?
Decay
What are the causes of decay?
An unstable nucleus, which can be caused by:excess of neutronsshortage of neutronsmetastable excited state of nucleus
What atom undergoes radioactive decay what is actually split or affected the most?
nucleus
What does the unstable nucleus of an atom give off during radioactive decay?
An unstable nucleus (radioactive isotope) may emit: alpha particles, beta particles, gamma radiations, electrons, positrons, X-rays, and neutrons, depending on which nucleus is doing the emitting.
What happens to a nucleus of an unstable atom?
the unstable nucleus will decay into smaller, stable particles.
When an unstable Bromine nucleus undergoes alpha decay the nucleus formed is that of?
If a bromine atom underwent alpha decay, the result would be an arsenic atom with a mass number four lower than the original bromine atom. I did a little research on this, however, and it appears that there are no bromine isotopes that undergo alpha decay. I have provided a link to the interactive table of nuclides.
What triggers an unstable nucleus to decay?
When a nucleus is unstable it has either too many or too few neutrons in the nucleus. This is what causes nuclear decay as the nucleus needs to have the correct ratio of neutrons to protons to be stable. It may be triggered by an outside force, such as a colliding particle, or simply by chance.
What is a radioactive decay series and when does it end?
Usually called a 'decay chain', there is a series of radioactive decays which end with a stable isotope. Ex: uranium undergoes about 14 steps in the decay chain that ends with the formation of a stable isotope of Lead.
