What does beryllium-7 decay into via electron capture?
1.16. Beryllium-7 decays by electron capture to 7Li with a half-life of 53.3 days.
What does beryllium decay into?
Beryllium-10 has a half-life of 1.39 × 106 years, and decays by beta decay to stable boron-10 with a maximum energy of 556.2 keV. It decays through the reaction 10Be→10B + e−. Light elements in the atmosphere react with high energy galactic cosmic ray particles.
Is beryllium-7 unstable?
Beryllium has one stable isotope, 9Be. The radioisotope 7Be (T1/2=53.29d, β−=−12,098.376±70.713 keV) has been used in experimental compounds for research purposes and is available commercially.
How is beryllium-7 formed?
Beryllium-7 ( 7 Be) is a cosmogenic radionuclide with a halflife of 53.3 days produced in the atmosphere by cosmic ray spallation of nitrogen and oxygen atoms (Lal et al. About 75% of 7 Be is produced in the stratosphere and 25% in the upper troposphere (Yoshimori 2005) .
What element is formed when 8be decays?
Beryllium-8 (8Be, Be-8) is a radionuclide with 4 neutrons and 4 protons. It is an unbound resonance and nominally an isotope of beryllium. It decays into two alpha particles with a half-life on the order of 8.19×10−17 seconds….Beryllium-8.
| General | |
|---|---|
| Isotope mass | 8.00530510(4) u |
| Spin | 0 |
| Decay modes | |
| Decay mode | Decay energy (MeV) |
What mode of radioactive decay is most likely for the Be 7 isotope?
Most isotopes of beryllium within the proton/neutron drip lines decay via beta decay and/or a combination of beta decay and alpha decay or neutron emission. However, 7Be decays only via electron capture, a phenomenon to which its unusually long half-life may be attributed.
Why is beryllium 8 so unstable?
If carbon twelve were to undergo alpha decay it would turn into an unstable atom, but beryllium-8 is unstable because it would much rather be two helium-4’s.
What is beryllium 9 Half-Life?
Beryllium
| Mass Number | Half-life | Decay Mode |
|---|---|---|
| 7 | 53.24 days | Electron Capture |
| 8 | 8.181×10 -17 seconds | Alpha Decay |
| 9 | STABLE | – |
| 10 | 1.387×10 +6 years | Beta-minus Decay |
Why is Beryllium not stable?
Is be 7 radioactive?
1.1. Beryllium-7 (7Be) (T1/2 = 53.3 days) is a cosmogenic fallout radionuclide (FRN) produced in the upper atmosphere by cosmic ray spallation of nitrogen and oxygen.
Why does beryllium alpha decay?
It decays into two alpha particles with a half-life on the order of 8.19×10−17 seconds. This has important ramifications in stellar nucleosynthesis as it creates a bottleneck in the creation of heavier chemical elements….Beryllium-8.
| General | |
|---|---|
| Isotope mass | 8.00530510(4) u |
| Spin | 0 |
| Decay modes | |
| Decay mode | Decay energy (MeV) |
How can radioactive decays be represented in nuclear equations?
A nucleus changes into a new element by emitting alpha or beta particles . These changes are described using nuclear equations. Alpha decay (two protons and two neutrons ) changes the mass number of the element by -4 and the atomic number by -2. An alpha particle is the same as a helium-4 nucleus .