Radioactive materials come in all sorts. Some are really "hot" and will damage a person instantly, others are "cooler" and can be handled a bit without any risk.
the best material for the handle is wood, because it does not get hot and therefore will not burn your hand.
Yes, there are a number of uses for radioactive material. It depends on the type of radioactive material.
With great care
We often use a Geiger counter to detect and count the decay of radioactive material.
With great care
The name for the emissions of rays and particles by a radioactive material are called radioactive decay. There are many different types of radioactive decay that emit different rays and particles.
As radium is radioactive, radium chloride would also be radioactive. Any compounds make with any radioactive material are radioactive, and they cannot be "not" radioactive. Radioactive material doesn't really care if it is "alone" or in compound; it will be radioactive in any case.
The core of the earth is radioactive, as is the sun. Granites, which crystallize from mantle material are commonly slightly radioactive.
Radioactive Contamination
400 yrs
label
The length of time required for half of a sample of radioactive material to decay