Radioactivity

Front

What does the number 7 represent in the isotopic symbol \(^{16}_{7}N\)?

Back

Atomic number

Front

Which type of radiation has the greatest penetrating power?

Back

Gamma radiation

Front

What fraction of Thorium-234 remains after 96 days if its half-life is 24 days?

Back

1/16

Front

What is the heaviest but least penetrating type of radiation used in smoke detectors?

Back

Alpha ray

Front

What element is produced by uranium experiencing alpha decay?

Back

Thorium (Th)

Front

Define radioactivity.

Back

The process by which unstable atomic nuclei lose energy by emitting radiation.

Front

What are the three main types of radiation?

Back

Alpha, Beta, and Gamma radiation.

Front

What is a half-life?

Back

The time required for half of the radioactive atoms in a sample to decay.

Front

What is the charge of an alpha particle?

Back

+2 (positive charge)

Front

What is the charge of a beta particle?

Back

-1 (negative charge)