The correct answer is Sir Ernest Rutherford.
One of the first findings on atomic energy theory was reached in 1911 by Rutherford, who became known as the father of nuclear physics.
He discovered that the mass of the atom was concentrated in its nucleus, and proposed that the nucleus has a positive charge and is surrounded by negatively charged electrons, which had been discovered in 1897 by J. J. Thomson.
His theory was complemented in 1913 by Niels Bohr, who placed the electrons in definite shells or quantum levels.
It was the The Battle of Antietam during the Civil War that was the bloodiest single day in American history--with he battle leaving roughly 23,000 men killed or wounded.
President Harry S. Truman was the 33rd
president of the United States, taking the office after late Franklin D, Roosevelt.
Truman assumed the presidency during the Second World War and gave an order to
drop the first atomic bomb attack. After it appeared that Japan won’t
capitulate, Truman ordered first atomic attack on Hiroshima (August 6th
in 1945) and the second on Nagasaki (August 9th in 1945) resulting
in 214.000 people dying.
C. Savanna
The Serengeti Plains is one of the most famous savanna’s in the world!
Hood this helps! :)
