Question

the following symbol is used to represent the particles in what type of radiation?
$\ce{_{-1}^0 e}$
select one:
a. alpha
b. beta
c. gamma
d. neutron

which of the following types of nuclear emission travels at the fastest speed?
select one:
a. alpha particle
b. gamma ray
c. beta particle
d. neutron

Explanation:

1. For the first question: The symbol $\ce{^{0}_{-1}e}$ represents an electron, which is the particle emitted in beta (beta-minus) radiation. Alpha radiation uses a helium nucleus symbol, gamma is energy with no particle symbol, and neutrons have a different nuclear symbol.
2. For the second question: Gamma rays are electromagnetic radiation, which travels at the speed of light, faster than alpha particles, beta particles, and neutrons, which all have mass and travel slower than light.

Answer:

1. b. Beta
2. b. Gamma ray