they designed them, built the infrastructure and tested them.
The meaning of the word nuclear weapon, is a weapon that has a nuclear warhead on it.
Read Richard Rhodes books:The Making of the Atomic BombDark Sun
A nuclear weapon must be armed before it can be used. They are all built with safety mechanisms so they will not go off accidently or on impact after the crash of a delivery vehicle.
This nuclear weapon is called an atomic bomb or a nuclear bomb
An atomic weapon is an alternative name for a nuclear weapon, a weapon which derives its energy from the nuclear reactions of either fusion or fission.
Nuclear weapon detonations
If by "bomb" you mean a conventional explosive weapon, then the nuclear weapon is more powerful.
* Earthquake Richter 5.0 = 32 kilotons nuclear weapon, like was used at Nagasaki * Earthquake Richter 6.0 = 1 megaton nuclear weapon * Earthquake Richter 7.0 = 32 megaton nuclear weapon * Earthquake Richter 7.1 = 50 megaton nuclear weapon, Tsar Bomba, the largest nuclear weapon ever tested * Earthquake Richter 8.0 = 1 gigaton nuclear weapon, much larger than anything ever made
nuclear chemicals such as plutonium
That would vary from weapon to weapon.
no