What do you mean by K-capture explain with example?
Definition of ‘K-capture’
1. the transformation of an atomic nucleus in which an electron from the atom is spontaneously absorbed into the nucleus. A proton is changed into a neutron, thereby reducing the atomic number by 1. A neutrino is emitted.
What is the difference between K-capture and L capture?
The captured electron usually comes from the 1s or 2s orbitals, because these are closest to the nucleus. If the electron comes from the 1s level (the K-shell), the process is called K-electron capture. Capture from the n=2 level is called L-electron capture, and so on.
What is electron capture in chemistry?
Electron capture is the radioactive decay process by which an atom’s inner orbital electron is absorbed within the nucleus followed by conversion of a proton to a neutron and emission of a neutrino (ve) 1.
Which rays are emitted due to K-capture?
Solution : In certain nucleus, the nucleus captures an electron from the K-shell (being nearest to the nucleus). The vacancy created is filled up with the electron from the higher shells thereby emitting X-rays. As a result of K-electron capture, a proton in the nucleus is converted into a neutron `(P^(+)+e^(-)to n)`.
What is the difference between beta decay and electron capture?
Electron capture occurs much less frequently than the emission of a positron. Whereas beta decay can occur spontaneously when energetically allowed, for an electron capture the weak forces requires that the electron come into close contact with a proton of the nucleus.
What causes electron capture?
What causes electron capture? Electron capture can occur when an electron comes too close to a proton. The negative electron and the positive proton are attracted to each other. If the electron and proton do combine, a neutron will be formed.
What’s the difference between positron emission and electron capture?
Positron emission is the release of a positron and an electron neutrino in the process of radioactive decay. Electron capture is a process which emits an electron neutrino. Both these processes take place in proton-rich nuclei.
Why does electron capture occur?
Beta capture (or electron capture) occurs when nuclides deficient in neutrons transform a proton into a neutron plus neutrino by the capture of an electron by a proton, thereby decreasing the number of protons in the nucleus by one.
What is the difference between electron capture and beta decay?
Is electron capture exothermic?
Electron capture for almost all nonnoble gas atoms involves the release of energy and thus are exothermic reactions.
Which is an example of electron capture?
Electron capture is a comparatively minor decay mode caused by the weak force. The best-known example is of potassium 40 : 11% of the nuclei of that isotope of potassium present in our body decay by electronic capture. The electron’s capture trigger the emission of an invisible neutrino by the nucleus.