Multiple Choice
Which element is classified as a nonmetal and is a solid at standard temperature and pressure (STP)?
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4. Atoms and Elements
Periodic Table: Classifications
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Who is most commonly credited with creating the first widely recognized periodic table (1869) by arranging elements according to recurring chemical properties?
A
J. J. Thomson
B
Antoine Lavoisier
C
Niels Bohr
D
Dmitri Mendeleev
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