EASY
AS and A Level
IMPORTANT
Earn 100

The isotope thorium- decays by -emission. Write down an equation to describe this decay and identify the element that is produced.

Important Questions on Atomic Structure and Particle Physics
EASY
AS and A Level
IMPORTANT
Copper- can decay by either emission . Give equations for both processes and identify the resulting elements.

MEDIUM
AS and A Level
IMPORTANT
Uranium decays through a series of -decays to eventually form the stable isotope lead- in what is known as a decay chain.
Determine the number of each type of decay in the decay chain.

EASY
AS and A Level
IMPORTANT
Show that the charges on the quarks making up a proton give it a charge of .

EASY
AS and A Level
IMPORTANT
Show that the charges on the quarks making up a neutron give it a charge of .

EASY
AS and A Level
IMPORTANT
A -meson is made up of an up quark and an antidown quark. Calculate its charge.

EASY
AS and A Level
IMPORTANT
Suggest which quarks or antiquarks make up a meson.

EASY
AS and A Level
IMPORTANT
Show that the -meson is neutral.

EASY
AS and A Level
IMPORTANT
Draw a diagram similar to Figure to show - dacay.
A visual representation of the change within the neutron as it decays into a proton.
