Question

Question 21 (4 points) Match each description to the correct type of nuclear decay. Column A 1. A negatively charged electron is emitted when a neutron in an unstable nucleus decomposes into a proton and electron.: A negatively charged electron is emitted when a neutron in an unstable nucleus decomposes into a proton and electron. 2. A wave of energy with no mass and no charge emitted by an unstable nucleus.: A wave of energy with no mass and no charge emitted by an unstable nucleus. 3. A positively charged particle made up of two protons and two neutrons emitted by an unstable nucleus.: A positively charged particle made up of two protons and two neutrons emitted by an unstable nucleus. 4. A positron is emitted from an unstable nucleus when a proton decays into a neutron and positron.: A positron is emitted from an unstable nucleus when a proton decays into a neutron and positron. Column B a.Beta minus decay b.Beta plus decay c.Alpha decay d.Gamma decay

Answer 1

1. Beta minus decay - A negatively charged electron is emitted when a neutron in an unstable nucleus decomposes into a proton and electron.
2. Gamma decay - A wave of energy with no mass and no charge emitted by an unstable nucleus.
3. Alpha decay - A positively charged particle made up of two protons and two neutrons emitted by an unstable nucleus.
4. Beta plus decay - A positron is emitted from an unstable nucleus when a proton decays into a neutron and positron.