Exam 10: Nuclear Physics

The process of obtaining energy by merging small nuclei is called

The alpha scattering experiment resulted in the discovery of the ______________.

The half-life of ³H is 12 years. About how long does it take for 127/128 of a sample of that radionuclide to decay?

Complete the equation. _____________

The common unit of radiation absorbed dosage is the ______________.

Complete the equation, and state what type of decay is occurring. _____________

What happens to the atomic number (Z) and the mass number (A) when a nucleus emits a gamma ray?

Most stable types of nuclei have an ______________ number of protons and an ______________ number of neutrons.

The number of nucleons in an atom of is ______________.

No nuclide with an atomic number greater than ______________ is stable.

The first self-sustaining nuclear fission reaction was achieved in Chicago in 1942 under the direction of a scientist named ______________.

The reaction is an example of

When undergoes alpha decay, the daughter is

State the number of protons, electrons, and neutrons in an atom of .

An exoergic reaction

The diameter of an average atom is about

A fusion reaction occurring in the interior of some stars is shown below. Calculate the mass lost, in atomic mass units, and the energy produced, in millions of electron volts. (Recall that 931 MeV is the energy obtained from the conversion of 1 u of mass.) 4.00260 u 12.0000 u 15.9949 u

Complete the equation: ^* ______________

Short-term and long-term effects of radiation on the health of the recipient are called ______________ effects.

The nucleus makes up about what percentage of the mass of an atom?