EASY
MYP:4-5
IMPORTANT
Earn 100

Formulate balanced nuclear equations to describe the given example of radioactive decay:

Radium-221 is used in industrial radiography and undergoes alpha decay.

Important Questions on What's Inside the Nucleus?

EASY
MYP:4-5
IMPORTANT

Formulate balanced nuclear equations to describe the given example of radioactive decay:

Iodine-131 and astatine -211 have medical uses in the treatment of cancer, particularly in the thyroid. Each undergoes beta negative decay.

EASY
MYP:4-5
IMPORTANT

Formulate balanced nuclear equations to describe the given example of radioactive decay:

Co60 is used in external beam radiation therapy for treating cancer. It undergoes beta negative decay which is accompanied by the emission of gamma rays.

EASY
MYP:4-5
IMPORTANT

Formulate balanced nuclear equations to describe the given example of radioactive decay:

Po210 is used as a power source in unmanned spacecraft, including new horizons (the probe that visited Pluto in 2015). It undergoes alpha decay.

EASY
MYP:4-5
IMPORTANT

Formulate the radioactive decay series ( in which the α and β indicate the type of decay) to identify the nuclides X, Y and Z.

Th90232 - α  X -β  Y -β  Z - α Ra88224

EASY
MYP:4-5
IMPORTANT

Potassium-40 decays in three different ways:

about 90 per cent of  K1940 decays to Ca2040 by β emission.

Suggest how this process might be described using a nuclear equation.

EASY
MYP:4-5
IMPORTANT

Potassium-40 decays in three different ways:

a very very small amount (0.001 per cent) decays directly to Ar1840 by β+ emission.

Suggest how this process might be described using a nuclear equation.

EASY
MYP:4-5
IMPORTANT

Potassium-40 decays in three different ways:

about 10 per cent decays to  Ar1840 by electron capture.

Suggest how this process might be described using a nuclear equation.

EASY
MYP:4-5
IMPORTANT
Polonium-218 has half life of only 3 minutes. Deduce if you start with a 24 g sample, how much will be left after 9 minutes?