Basic Physics of Nuclear Medicine/Radioactive Decay MCQ

{Gamma-ray photons have: |type="()"} + no mass and no electric charge || Correct Answer - see Gamma Decay. - no mass and an electric charge of +1 - no mass and an electric charge of +2 - no mass and an electric charge of -1 {Electron Capture involves: |type="()"} - an electron combining with a neutron - a neutron being ejected from the nucleus + an electron combining with a proton || Correct Answer - see Beta Decay. - an electron being ejected from the nucleus {In Alpha Decay: |type="()"} - Z and A are unchanged - Z decreases by 4 and A decreases by 2 + Z decreases by 2 and A decreases by 4 || Correct Answer - see Alpha Decay. - Z decreases by 4 and A decreases by 4 {Isomeric Transition involves: |type="()"} + the emission of a gamma-ray || Correct Answer - see Gamma Decay. - the conversion of a neutron to a proton - the conversion of a proton to a neutron - K-capture {In spontaneous fission: |type="()"} - nuclear stability is always achieved + the nucleus splits into 2 or 3 fragments || Correct Answer - see Spontaneous Fission. - the fragments are never radioactive - the nucleus is unchanged {An alpha-particle consists of: |type="()"} - one proton and two neutrons - two protons and one neutron + two protons and two neutrons || Correct Answer - see Alpha Decay. - one proton and one neutron {Internal Conversion involves: |type="()"} + the emission of a gamma-ray || Correct Answer - see Gamma Decay. - the conversion of a neutron to a proton - K-capture - none of the above processes {Electron Emission involves the ejection of: |type="()"} + a beta-minus particle || Correct Answer - see Beta Decay. - an alpha-particle - a beta-plus particle - a proton and two neutrons {In Positron Emission: |type="()"} - Z increases by 1 and A remains the same + Z decreases by 1 and A remains the same || Correct Answer - see Beta Decay. - Z remains the same and A decreases by 1 - Z remains the same and A increases by 1 {Positron Emission involves the ejection of: |type="()"} - an alpha-particle - a beta-minus particle + a beta-plus particle || Correct Answer - see Beta Decay. - a proton and a neutron