Multiple Choice
Atomic Theory: Who is most commonly credited with arranging the periodic table by increasing atomic mass and using repeating chemical properties to group elements?
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4. Atoms and Elements
Atomic Theory
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In atomic theory, the electron cloud model describes electrons as existing in regions of probability rather than fixed orbits. Who is most closely associated with developing this electron cloud (quantum mechanical) model?
A
Niels Bohr
B
Erwin Schrödinger
C
J. J. Thomson
D
John Dalton
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