Yes, the first was detonated by the U.S. in 1952.Codename Mike as part of Operation Ivy, it had a yield of 10.4 megatons(450 times as powerful as the bomb dropped on Nagasaki)and was detonated at Eniwetok atoll in the Marshall islands.
No. Hydrogen Bombs have been detonated that make the atomic bomb look small in comparison. The Atomic Bombs dropped on Japan in WW2 were 25 Kton (equivilent to 25000 tons of dynamite), while H bombs can be as big as several hundred Megaton (million tons of dynamite)
Because there was no Japanese response to the first one.
The first atomic bomb used in war was dropped on Hiroshima, Japan. The delivery method was via an airplane named the 'Enola Gay'.
The first bomb dropped on Hiroshima was nicknamed Little Boy, the second bomb which was dropped on Nagasaki was nick named Fat Man
The first atomic bomb detonated was not dropped, it was hung from the top of a steel structure and detonated remotely.
Hiroshima was the first to be bombed in World War 2.
On August 9, 1945, the "Fat Man" nuclear bomb was detonated over Nagasaki.
USSR
It is not , if it is not detonated and it is properly maintained.
It was dropped over Hiroshima.
What do you mean, "leader"? Harry Truman was president of the US when both the first and second atomic bombs were dropped. The commander of the aircraft the "second" bomb (actually the third detonated, but the second to be "dropped" since the first was a test explosion and was not dropped but rather mounted on a tower) was dropped from was Major Charles W. Sweeney.
Actually, Germany knew better than the Japanese and surrendered on time to skip their nuclear bomb. Japan had to two delivered and detonated in their place.
The last atomic bomb used in combat was on August 9, 1945. Many more were dropped from airplanes or otherwise detonated in test shots.
The city of Hiroshima was the place where the first atomic bomb was dropped.
The Enola Gay dropped the first atomic bomb.
The first atomic bomb detonated was the Trinity Test Bomb on July 16, 1945. It had the estimated explosive power eqivalent of 20,000 Tons of TNT. It was identical to the bomb dropped on Nagasaki 3 weeks later. The Hiroshima bomb was of a different design and was about 15,000 Tons equvalent.