Radioactivity Quiz

What does the mass number(A) represent?

• Number of neutrons

• Number of protons

• Number of neutrons and protons

• Number of electrons and protons

Sodium has an atomic number equal to 11 and a mass number equal to 23, which one of these is correct?

• It has 23 protons and 11 neutrons

• It has 12 protons and 11 neutrons

• It has 12 neutrons and 11 protons

• It has 23 neutrons and 11 protons

What is the relative charge of a proton?

• +1e

• -1e

• 0

• +2e

Isotopes of an element have the same number of:

• • Electrons

• • Protons

• • Neutrons

• All of the above

Which of these are not Hydrogen isotopes (1 proton, 0 Neutrons) ?

• Deuterium- 1 proton, 1 neutron

• Tritium- 1 proton, 2 neutrons

• Tralphium- 2 protons, 1 neutron

• Diproton- 2 protons, 0 neutrons

Which of these is not a form of radioactive decay?

• Alpha

• Delta

• Gamma

• Beta

Which type of radiation is a high-energy electromagnetic wave emitted from an excited nucleus?

• • Alpha

• Beta

• Gamma

• Electron

Which type of decay involves the emission of a helium nucleus?

• • Alpha

• • Beta

• • Gamma

• • Delta

What is the nature of a beta particle?

• Neutron

• Electron

• Proton

• Wave

What type of radiation can be stopped by a sheet of paper?

• Beta

• Alpha

• Gamma

• Delta