Actinides have similar properties.
Nothing special. Atomic bombs can be built with either uranium, plutonium, or composite (plutonium/uranium) cores. All work the same.
Plutonium
It is relative easy to obtain uranium; the preparation of plutonium is more difficult and extremely dangerous.
Alternatives for uranium may be plutonium and thorium.
Uranium and Plutonium
Yes, especially in the past (plutonium pit)
Uranium and plutonium can form alloys.
Plutonium and uranium can form alloys.
Yes, it is possible to recycle "burned" uranium and plutonium.
The atomic radii of uranium and plutonium are identical.
Plutonium is obtained from uranium irradiated in nuclear reactors, consequently the production of plutonium depends on uranium resources.
Plutonium is obtained from uranium irradiated in nuclear reactors, consequently the production of plutonium depends on uranium resources.
Uranium and plutonium are both actinides that are used in nuclear reactors.
Uranium is not easily obtained; and the technology of plutonium is extremely difficult.
Uranium and plutonium can be used as nuclear fuels for nuclear reactors.
In their most stable forms, Uranium has an atomic mass of 238 and plutonium has an atomic mass of 244, plutonium has a greater mass than that of Uranium.
Nothing special. Atomic bombs can be built with either uranium, plutonium, or composite (plutonium/uranium) cores. All work the same.