Am-242 undergoes beta-decay at a half-life of 16 hours. If a chemist starts with a sample of of Am-242 and allows it to undergo beta-decay, how much of the original sample remains after 4 days?

What kind of radiation has no charge or mass?

The isotope of potassium is used to date geological materials. One of the decay reactions this isotope undergoes is:

In order for the nuclear reaction to be balanced can be:

Suppose that a radioactive isotope whose half-life is equal to is allowed to decay. After waiting , how much of this compound would be expected to exist compared to the initial amount?

Uranium-238 undergoes alpha decay. Which nucleus is formed as a result of this decay?

An alpha particle can also be written as which of the following?

Consider the following isotope of thorium:

What is the identity of the product following three alpha decay reactions?

Consider the following isotope:

What is the identity of the product after the following series of decay reactions?

alpha decay, alpha decay, electron emission, positron emission, positron emission