Chemical properties. Calcium is a moderately active element. It reacts readily with oxygen to form calcium oxide (CaO): Calcium reacts with the halogensâ fluorine, chlorine, bromine, iodine, and astatine, The halogens are the elements that make up Group 17 (VIIA) of the periodic table.
Purpose. Before the bombing of Hiroshima and Nagasaki, The war was costing not only many Americans' lives, but also caused tremendous casualties in Europe and Japan.he following are quotes by president Harry Truman, The world will note that the first atomic bomb was dropped on Hiroshima, a military base. That was because we wished in this first attack to avoid, insofar as possible, the killing of civilians.
And on August 6, 1945, Einstein was devastated upon hearing the news that the US had dropped an atomic bomb on Hiroshima. The sought-out scientist had agreed to the correspondence with Roosevelt under the conviction that a nuclear weapon would serve as an effective deterrent against Nazi Germany.hree days after the attack on Hiroshima, the United States dropped a second atomic bomb, Fat Man, on the southern Japanese city of Nagasaki, killing some 80,000 people.