Multiple Choice
Who is most commonly credited with creating the first widely recognized periodic table of elements based on recurring (periodic) properties?
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4. Atoms and Elements
Periodic Table: Classifications
Multiple Choice
How are elements on the periodic table arranged?
A
Alphabetically by element name
B
By increasing number of neutrons
C
By increasing atomic mass only
D
By increasing atomic number (number of protons)
Verified step by step guidance1
Understand that the periodic table is a systematic arrangement of elements based on their atomic structure.
Recall that each element is defined by its atomic number, which is the number of protons in its nucleus.
Recognize that the periodic table is arranged in order of increasing atomic number, not by element name, number of neutrons, or atomic mass alone.
Note that arranging by atomic number ensures elements with similar chemical properties fall into the same groups or columns.
Remember that while atomic mass generally increases with atomic number, the periodic table's organization is fundamentally based on atomic number to reflect periodic trends in element properties.
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