Test Review Electrons and Nuclear Chemistry

Which of the following would form a cation? Select all that apply.

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What is the name of the neutral element with the following electron configuration?

• phosphorus, P

• aluminum, Al

• chlorine, Cl

• argon, Ar

Which of these is NOT a type of radiation?

• alpha

• beta

• gamma

• lambda

How much of the radioisotope will remain after 60 days?

• 12.5 g

• 6.25 g

• 3.125 g

• 25 g

Which reaction represents fission?

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Which type of radiation is the LEAST penetrating?

• alpha

• beta

• gamma

• delta

What is missing in this equation?

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Out of the following samples, which is the youngest based on the amount of radioactive material remaining?

• sample A (15% radioactive material remaining)

• sample B (25% radioactive material remaining)

• sample C (45% radioactive material remaining)

• sample D (75% radioactive material remaining)

What was the original mass of the radioisotope?

• 200 g

• 30 days

• 100 g

• 5 days

How many half-lives have passed if only 50 g remain?

• one half-life

• two half-lives

• three half-lives

• four half-lives