Front

The technetium-99 isotope has a half-life of 6.0 hours. If 100.0 mg were injected into a patient, how much remains after 18 hours?

Back

12.5 mg

Front

In a correctly written symbol, what is located in the "A" position?

Back

mass number

Front

How many protons are in this atom? Options: 3, 4, 6, 10

Back

3

Front

What is the name of the pictured isotope? Options: Copper-29, Copper-63, Copper-34, Copper-43

Back

Copper-63

Front

Rubidium-87 with atomic number of 37 gives off a beta particle. What will be the resulting isotope?

Back

Kr-87 with atomic number of 36

Front

These three isotopes of carbon have different -

Back

Mass numbers

Front

How many neutrons are in this isotope of Uranium?

Back

143

Front

Which type of nuclear radiation is being emitted here?

Back

Beta

Front

What is meant by the statement that ³²₁₅P has a half life of 14 days?

Back

It takes 14 days to go down to 50% radioactivity each time.

Front

How is carbon-12 different from carbon-14?

Back

They have a different number of neutrons