Table of Contents
What element is formed by the beta decay of sodium-24?
magnesium-24
With a half-life of 15 hours, it decays by beta decay to an excited magnesium-24 (24Mg) nucleus.
What is the disintegration energy for the β − decay of NA 24?
Na-24 decays 100% by beta minus emission. The main transition (99.939%) has a maximum energy of 1393 keV and populates the 4123 keV level of Mg-24.
Is sodium 24 natural?
Sodium-24 is a stable isotope containing 11 neutrons. Only trace amounts of sodium-24 are found naturally. Sodium-24 is a radioactive isotope which decays into 24Mg by β- decay. Its half-life is 14.96 hours.
What is the medical use of sodium 24?
Sodium 24 is used as an electrolyte tracer to follow the path sodium takes in a person’s body to see if their uptake levels are within normal ranges, while sodium 22 is used in nuclear medicine imaging for positron emission tomography. Sodium -24 can also be used in non-medical applications.
How do you calculate nuclear decay?
Radioactive decay law: N = N.e-λt The rate of nuclear decay is also measured in terms of half-lives. The half-life is the amount of time it takes for a given isotope to lose half of its radioactivity. If a radioisotope has a half-life of 14 days, half of its atoms will have decayed within 14 days.
How does sodium 24 detect leaks?
Sodium 24 is an example of a radioisotope used in leak detection. It has a half life of about 15 hours and emits beta radiation and gamma radiation. Radioactivity can be used to date rocks. This is unstable and eventually decays to lead, which is stable.
How to write an equation for the beta decay of sodium?
At the same time, the nuclide emits an electron, also called a beta particle, and an electron antineutrino, ¯νe. Since a neutron is being converted to a proton, you can say that the atomic number of the nuclide increases by 1 and the mass number of the nuclide remains unchanged. A = 24 → the mass number remains unchanged!
What is the nuclear symbol for beta decay?
β⁻ DECAY. The nuclear symbol for a β⁻ particle is #””_-1^0″e”#. In any nuclear equation, the sum of the subscripts (atomic numbers, Z) and the sum of the superscripts (atomic masses, M) must be equal on each side of the equation.
What kind of decay does sodium-23 have?
Both neon-23 and magnesium-23 decay into sodium-23 by beta decay. There are two types of beta decay: β⁻ decay is a process in which a nucleus emits an electron. β⁺ decay is a process in which a nucleus emits a positron — the antimatter counterpart of an electron.
How does sodium-24 decay to magnesium-24?
Sodium-24 decays into an excited nucleus of magnesium-24. Magnesium reaches nuclear ground level via two consecutive gamma emissions. What are the half-lives (time scales) for these two processes?