Question

During negative ′\[\beta \] ′ decay, an anti-neutrino is also emitted along with the ejected electron, Then
A. Only linear momentum will be conserved.
B. Total linear momentum and total angular momentum but not total energy will be conserved.
C. Total linear momentum and total energy but not total angular momentum will be conserved.
D. Total linear momentum, total angular momentum and total energy will be conserved.

Answer 1

Hint:Beta particles are electrons or positrons (electrons with positive electric charge, or antielectrons). Beta rot happens when, in a core with an excessive number of protons or such a large number of neutrons, one of the protons or neutrons is changed into the other.

Complete answer:
In beta less rot, a neutron rots into a proton, an electron, and an antineutrino. In beta in addition to rot, a proton rots into a neutron, a positron, and a neutrino. The two responses happen on the grounds that in various districts of the Chart of the Nuclides, either will draw the item nearer to the area of security. These specific responses happen in light of the fact that preservation laws are compiled.Electric charge preservation requires that if an electrically unbiased neutron turns into an emphatically charged proton, an electrically negative molecule (for this situation, an electron) should likewise be created.

Additionally, protection of lepton number requires that if a neutron \[\left( {lepton{\text{ }}number{\text{ }} = {\text{ }}0} \right)\] rots into a proton \[\left( {lepton{\text{ }}number{\text{ }} = {\text{ }}0} \right)\] and an electron \[\left( {lepton{\text{ }}number{\text{ }} = {\text{ }}1} \right)\] a molecule with a lepton number of \[ - {\text{ }}1\](for this situation an antineutrino) should likewise be created. Hence, during negative ′\[\beta \] ′ decay anti-neutrino is emitted in negative \[\beta \] decay so as to conserve linear momentum, angular momentum as well as total energy.

Hence option D is the correct answer.

Note: Negative \[\beta \] ′ decay conserves linear momentum, angular momentum and energy too. The leptons radiated in beta rot didn't exist in the core before the rot they are made at the moment of the rot. The isotope nitrogen-12, which has very few neutrons, is an instance of beta plus decay. The nucleus becomes carbon-12, which is highly stable, if a proton changes to a neutron, giving out a beta plus electron.