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To end the war and to collapse Japan's means to make war.
To bring about the quickest way to end the war
Because they pissed us off at Pearl Harbor so we returned the favor
The war against Germany was effectively won at the time the atomic bomb was developed, it would not have been politically expedient to explode such a weapon on mainland Europe.The US realised any future conflict was going to be with the USSR. The atomic bombs were dropped for political reasons, to show the USSR they had an awesome weapon.Political expediency is not always pleasant.
Against Japan: Hiroshima and Nagasaki.
Atomic weight is not the same as atomic number for any element except hydrogen; this is the only element that has a radioactively stable isotope with no neutrons.
atomic number
To defend against a possible Nazi atomic bomb!
Atomic radius decreases across a period from left to right, except for the noble gases.
A,atomic nuclei
Atomic weight is used for historical reasons. It was the first science to investigate the same physical objects.
The atomic number is 2, and the atomic mass is 4 (helium)