Nuclear Chemistry

Radioactivity and Radioactive decay Review

Multiple Choice

What is radioactivity?

• Radioactivity is the emission of radiation from unstable atomic nuclei.
• Radioactivity is the chemical reaction between stable atoms.
• Radioactivity refers to the absorption of radiation by materials.
• Radioactivity is the process of creating stable atomic nuclei.

Multiple Choice

What is the alpha particle?

• An alpha particle is a helium nucleus consisting of two protons and two neutrons.
• An alpha particle is a type of radioactive wave.
• An alpha particle is a neutron and an electron combined.
• An alpha particle is a single proton.

Alpha Decay

Multiple Choice

If francium (Fr) atomic number 87 undergoes alpha decay what is the ending atom?

• lead (Pb)
• astatine (At)
• polonium (Po)
• bismuth (Bi)

Multiple Choice

What is the beta particle?

• A beta particle is a proton found in the nucleus.
• A beta particle is a neutron emitted during decay.
• A beta particle is an electron emitted during beta decay.

• A beta particle is a type of gamma radiation.

0

-1e or 0

-1𝛃

Beta

electron (beta particle)

small

harder

medium

Starting Atom ----> 0

-1e + Ending Atom

Beta Decay

Beta Decay

Multiple Choice

If cobalt (Co) Atomic number 27 undergoes beta decay what is the ending atom?

• Zinc (Zn)
• Iron (Fe)
• Nickel (Ni)
• Copper (Cu)

Gamma Decay

Multiple Choice

If iodine (I) atomic number 53 undergoes gamma decay what is the ending atom?

• Iodine-131 with atomic number 53
• Bromine (Br) with atomic number 35
• Iodine (I) with atomic number 53
• Xenon (Xe) with atomic number 54

Penetrating Power of Different types of Decays