Band of Nuclear Stability

Review of Radioactive Decay

Multiple Choice

An atom undergoes radioactive decay because it is ____.

• stable

• unstable

Multiple Choice

An atom that has undergone radioactive decay is now ___ stable than it was before the decay.

• more

• less

Multiple Choice

Atoms ON the band of stability are:

• stable and will NOT undergo decay

• stable and WILL undergo decay

• UNstable and will NOT undergo decay

• UNstable and will undergo decay

Multiple Choice

You can determine the number of neutrons in an atom by

• it is equal to the mass number

• adding the protons to the atomic number

• adding the atomic number and mass number together

• subtracting the number of protons from the mass number

Multiple Choice

An atom that contains 8 protons and 10 neutrons:

• is found ON the band of stability

• is found ABOVE or BELOW the band of stability

Multiple Choice

An atom that has 12 p⁺ and 12 n^o is:

• stable and will NOT undergo decay

• stable and WILL undergo decay

• UNstable and will NOT undergo decay

• UNstable and will undergo decay

Multiple Choice

This model represents

• an stable atom spitting out radiation

• an unstable atom spitting out radiation

Multiple Choice

This symbol represents

• an alpha particle

• a beta particle

• gamma radiation

Multiple Choice

This symbol represents

• an alpha particle

• a beta particle

• gamma radiation

Multiple Choice

This symbol represents

• an alpha particle

• a beta particle

• gamma radiation

Multiple Choice

Radioactive decay may produce a daughter atom that is actually a different element IF

• the number of neutrons changes

• the number of protons changes

• the number of neutrons OR protons changes.

Multiple Choice

An alpha particle consists of:

• 4 protons

• 2 protons and 2 neutrons

• an electron

• energy

Multiple Choice

An beta particle is actually

• 4 protons

• 2 protons and 2 neutrons

• an electron

• energy

Multiple Choice

Gamma radiation is:

• 4 protons

• 2 protons and 2 neutrons

• an electron

• energy

Multiple Choice

We write a -1 on the bottom left of the beta symbol because a beta particle:

• has the same charge as a proton

• has the opposite charge as a proton

• has basically no mass

• is just energy

Multiple Choice

We write a 0 on the top left of the beta symbol because a beta particle:

• has the same charge as a proton

• has the opposite charge as a proton

• has basically no mass

• is just energy

Multiple Choice

When determining the MASS NUMBER of the daughter atom produced during ALPHA DECAY, you should:

• write the same mass number as the parent atom

• subtract 2 from the mass number of the parent atom

• subtract 4 from the mass number of the parent atom

• add 1 to the mass number of the parent atom

Multiple Choice

When determining the ATOMIC NUMBER of the daughter atom produced during ALPHA DECAY, you should:

• write the same atomic number as the parent atom

• subtract 2 from the atomic number of the parent atom

• subtract 4 from the atomic number of the parent atom

• add 1 to the atomic number of the parent atom

Multiple Choice

Which of the following should ALWAYS be included in an equation representing ALPHA DECAY?

Multiple Choice

Which of the following completes the following equation:

²¹⁴₈₃Bi --> ________ + ⁴₂He

• ²¹⁰₈₁Bi

• ²¹⁰₈₁Tl

• ²¹⁴₈₄Po

• ²¹⁴₈₁Tl

Multiple Choice

What is the daughter atom of the ALPHA decay of Gold-175? (the atomic # of gold is 79)

• Ir-171

• Au-179

• Tl-179

• Au-171

Multiple Choice

When determining the MASS NUMBER of the daughter atom produced during BETA DECAY, you should:

• write the same mass number as the parent atom

• subtract 2 from the mass number of the parent atom

• subtract 4 from the mass number of the parent atom

• add 1 to the mass number of the parent atom

Multiple Choice

When determining the ATOMIC NUMBER of the daughter atom produced during BETA DECAY, you should:

• write the same atomic number as the parent atom

• subtract 2 from the atomic number of the parent atom

• subtract 4 from the atomic number of the parent atom

• add 1 to the atomic number of the parent atom

Multiple Choice

Which of the following should ALWAYS be included in an equation representing BETA DECAY?

Multiple Choice

Which of the following completes the following equation:

¹⁴₆C --> ________ + ⁰_-1e

• ¹⁴₅B

• ¹⁴₆C

• ⁴₂He

• ¹⁴₇N

Multiple Choice

Which of the following is the daughter atom that remains when Copper-66 undergoes beta decay?

• Cobalt-62

• Zinc-66

• Copper-30

• Copper-66

Multiple Choice

When determining the MASS NUMBER of the daughter atom produced during GAMMA DECAY, you should:

• write the same mass number as the parent atom

• subtract 2 from the mass number of the parent atom

• subtract 4 from the mass number of the parent atom

• add 1 to the mass number of the parent atom

Multiple Choice

When determining the ATOMIC NUMBER of the daughter atom produced during GAMMA DECAY, you should:

• write the same atomic number as the parent atom

• subtract 2 from the atomic number of the parent atom

• subtract 4 from the atomic number of the parent atom

• add 1 to the atomic number of the parent atom

Multiple Choice

Which of the following should ALWAYS be included in an equation representing GAMMA DECAY?

Multiple Choice

What is the daughter atom of the GAMMA decay of Cobalt-60? (the atomic # of Cobalt is 27)

• Copper-62

• Manganese-56

• Nickel-60

• Cobalt-60