What is the half-life of sodium-24 explain your answer?
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What is the half-life of sodium-24 explain your answer?
Figure 7: Decay scheme of a radioactive sodium-24 (24Na) nucleus. With a half-life of 15 hours, it decays by beta decay to an excited magnesium-24 (24Mg) nucleus. Two gamma rays are rapidly emitted and the excitation energy is carried off, whereby the stable ground state of magnesium-24 is reached.
How do you find the half-life of sodium-24?
Notice that the time period between each of the yellow crosses is 15 hours. This tells us that the count rate of Sodium-24 halves every 15 hours. In other words, the activity of Sodium-24 is halved every 15 hours. We can summarise this by saying that Sodium-24 has a half-life of 15 hours.
What’s the atomic number of sodium-24?
11
4.3Related Element
| Element Name | Sodium |
|---|---|
| Element Symbol | Na |
| Atomic Number | 11 |
Which of the following is the application 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.
What is the mass of sodium-24?
List of isotopes
| Nuclide | Z | Isotopic mass (Da) |
|---|---|---|
| Excitation energy | ||
| 23Na | 11 | 22.9897692820(19) |
| 24Na | 11 | 23.990963011(18) |
| 24mNa | 472.207(9) keV |
What do Carbon 12 and 14 have in common?
Carbon exists in several isotopes. The most common of these is carbon 12, 13, 14. All of these isotopes have the same atomic number but different mass numbers. Carbon has the atomic number of 6 which means that all isotopes have the same proton number.
How is sodium 24 used?
How many protons does mg/24 have?
12 protons
For instance, 24Mg is read as “magnesium 24,” and can be written as “magnesium-24” or “Mg-24.” 25Mg is read as “magnesium 25,” and can be written as “magnesium-25” or “Mg-25.” All magnesium atoms have 12 protons in their nucleus.
What is the atomic number of an atom with 12 protons 12 neutrons and 12 electrons?
Magnesium, in its elemental form, has 12 protons and 12 electrons. The neutrons are a different matter. Magesium’s average atomic mass is 24.305 atomic mass units, but no magnesium atom has exactly this mass.