Multiple Choice
In atomic theory, who is most commonly credited with developing the electron cloud (quantum mechanical) model of the atom?
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4. Atoms and Elements
Atomic Theory
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In Mendeleev's first widely accepted periodic table, how were the elements primarily arranged?
A
Alphabetically by element name, grouping elements with similar chemical properties
B
By increasing number of neutrons, grouping elements with similar chemical properties
C
By increasing atomic number, grouping elements with similar chemical properties
D
By increasing atomic mass, grouping elements with similar chemical properties
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