Exam 10: Nuclear Physics

How many nucleons are there in an atom of ?

A scientist named ______________ discovered radioactivity in 1896.

How many protons are there in an atom of ?

The United States' effort to build an atomic bomb was named the ______________ Project.

An endoergic reaction

The symbolic notation for an alpha particle is ______________.

The diameter of the average atom is about ______________ m.

How many protons does Radon have?

Only the energy of a nucleus, and not its identity, is changed when it undergoes ______________ decay.

Only four nuclides having an ______________ number of protons and an ______________ number of neutrons are stable.

The most important force between a proton and a neutron is the ______________ force.

The scientist who developed the modern symbol notation for elements was named ______________.

The antiparticle of the electron is called the ______________.

When the number of protons in a nucleus exceeds ______________, the nucleus is unstable.

After seven half-lives have elapsed, what fraction of the original amount of radionuclide remains?

The four stable odd-odd nuclides are and ______________.

If the activity of a sample of ²³²Th decreases from 1000 cpm to 500 cpm in 60 min, in another 60 min its activity will be

Which type of hydrogen is referred to as "heavy hydrogen"?

In which unit would it be best to state the dosage of radiation absorbed, with regard to its effects on humans?

The diameter of the average nucleus is about ______________ m.