Because it was the right time for it:
The first Nuclear weapon was created by a team of American Scientist's, known as the Manhattan project. It was first tested and used in 1945, not long before we used them on Japan.
1964
The first nuclear weapon was used on Hiroshima , Japan . The first nuclear bomb test was conducted in Alamogordo, New Mexico, on July 16, 1945 .
1964
Put it on its delivery vehicle.
the first nuclear weapon was issued in WW2 created by the americans in a chicargo squash court
The first Nuclear Weapon.
The meaning of the word nuclear weapon, is a weapon that has a nuclear warhead on it.
It is the most destructive weapon ever created.
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