What is the use of Natrium 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.
Does all of the sodium 24 decays at once?
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.
What are the similarities and differences between the two isotopes of sodium NA 23 and NA 22?
Sodium-22 is a radioactive isotope which decays into 22Ne by β+ decay. Its half-life is 2.6 years. Sodium-23 is the only stable isotope of sodium. It contains 12 neutrons.
Is sodium 22 radioactive?
Sodium has one naturally occurring isotope. The nucleus of this isotope contains 11 protons and 12 neutrons and is not radioactive. All are radioactive. Sodium-22, sodium’s most stable radioactive isotope, has a half-life of 2.6 years.
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.
Why is sodium in water so reactive?
Its single outer electron makes the metal highly reactive and ready to combine with others at the first opportunity – such as the moment the metal hits water. According to the textbooks, these reactive electrons rip apart the surrounding water molecules to release hydrogen gas and heat.
Is sulfur or oxygen more reactive?
oxygen is only more reactive than sulphur because due to small atomic size oxygen atom has high tendency to attract the electrons ( more electronegative )….
Which element is the least reactive in Group 7?
Revision notes on the topic ‘Group 7: Reactivity’ for Edexcel IGCSE Chemistry
- Reactivity of Group 7 non-metals increases as you go up the group.
- Out of the 3 halogens, chlorine, bromine and Iodine, chlorine is the most reactive and iodine is the least reactive.
Is Br or I more reactive?
Most reactive: Fluorine (F). Order from most reactive to least reactive: Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), Astatine (At), Tennessine (Ts).
Is CL more stable than Br?
Bromine radical, being less reactive, is more selective for the 2° radical. Cl•, being less stable and more reactive, is less choosy and less selective.
Why is I more reactive than Br?
Although the bromine nucleus is more positively charged than the chlorine nucleus, the increase in the radius and the extra shielding in the bromine atom outweigh this factor, which means that an electron is more easily attracted into the outer shell of a chlorine atom than that of a bromine atom, so chlorine is more …
Is BR 80 stable?
Bromine (35Br) has two stable isotopes, 79Br and 81Br, and 32 known radioisotopes, the most stable of which is 77Br, with a half-life of 57.036 hours.
What is the difference between BR 79 and BR 81?
Bromine (Br), at atomic number 35, has a greater variety of isotopes. There are two main isotopes at 79 and 81, which average out to the 79.90amu value. The 79 has 44 neutrons and the 81 has 46 neutrons. While it won’t change the average atomic mass, scientists have made bromine isotopes with masses from 68 to 97.