nuclear decay and half life

 Number of nucleons (protons +

neutrons) in nucleus

When an unstable nucleus emits a particle (alpha, beta,

gamma)

When a nucleus is bombarded in a laboratory with a

nucleon, an alpha particle or another small nucleus, resulting in a nuclide with a

different proton number (a different element).

Uranium-238  decays into  Thorium-234  by emitting .........

• an alpha particle
• a beta particle
• gamma rays
• visible light

A radioactive tracer is used to investigate a patient's body without the need for

• Testing
• Surgery

• nuclear fission

• radioactive decay

• nuclear fusion

• artificial transmutation

How much energy is equivalent to 1 electron volt.

• 1 J

• 1.6 x 10^-19 J

• 1.6 x 10¹⁹ J

An isotope with a high Binding Energy per nucleon:

• will decay in a short period of time

• is very unstable

• is very stable

• has more protons than neutrons.

Which type of nuclear decay did Radon-198 go through?

• alpha decay

• beta decay

• gamma decay

The equation shows the decay of the nuclide X:

What are the values of P and Q ?

• A

• B

• C

• D