Decay Equations (H)

This equation shows the radioactive decay of thorium (Th). Which of the following particles is released in this reaction?

• alpha

• beta

• neutron

• gamma

• A

• B

• C

• D

• A

• B

• C

• D

• it's 88 because element X gains 2 protons

• it's 218 because element X loses 2 protons and 2 neutrons

• it's 220 because element X loses 2 neutrons

• it's 226 because element X gains 2 protons and 2 neutrons

What sort of decay is this?

• alpha

• beta

• gamma

• neutron

• none of the above

What sort of decay is this?

• alpha

• beta

• gamma

• neutron

• none of the above

What sort of decay is this?

• alpha

• beta

• gamma

• neutron

• none of the above

What sort of decay is this?

• alpha

• beta

• gamma

• neutron

• none of the above

What does A represent?

• Atomic number

• Mass number

• Element symbol

• Number of neutrons

• Number of protons and neutrons

What happens to Z in a beta decay

• +2

• +1

• 0

• -1

• -2