Lesson Worksheet: Beta Decay and Electron Capture Chemistry • 10th Grade
In this worksheet, we will practice writing equations for beta decay, positron emission, and electron capture and describing the properties of beta particles.
Q1:
When an atom decays by internal conversion, the energy of the nucleus decreases and an electron is emitted. Which of the following statements is true?
- AThe mass number of the atom changes.
- BThe electron can be referred to as a particle.
- CThe electron is emitted from the nucleus.
- DThe charge of the atom changes.
- EAn antineutrino is also emitted.
Q2:
A nucleus decays by emitting a positron and a second particle.
What is the second particle?
- AElectron neutrino
- BMuon neutrino
- CPhoton
- DElectron antineutrino
- EMuon antineutrino
Which quantized property needs the emission of the second particle in order to be conserved?
- ACharge
- BBaryon number
- CNucleon number
- DLepton number
- EMassâenergy
Q3:
An atom of nickel-59 decays by electron capture.
Which particle is emitted during this decay?
- ANeutron
- BElectron neutrino
- CElectron antineutrino
- DPositron
- EElectron
What is the change in the atomic number of the atom during this decay?
Which isotope is produced by this decay?
- ACobalt-59
- BCopper-58
- CCopper-59
- DCobalt-58
- ENickel-58
Q4:
The nucleus of an atom captures an inner-shell electron and two particles of nonzero mass are emitted. What are the identities of these two particles?
- AElectron and antineutrino
- BElectron and neutrino
- CNeutron and neutrino
- DNeutron and antineutrino
- ENeutron and electron
Q5:
An atom of is stable. Which of the following unstable atoms would be most likely to decay via electron capture?
- A
- B
- C
- D
- E
Practice Means Progress
Boost your grades with free daily practice questions. Download Nagwa Practice today!
