Which of the following did Antoine Lavoisier correctly characterize as an element?
Which of the following did Antoine Lavoisier incorrectly characterize as matter?
: As
arsenic: As
: K
potassium: K
tin:
Sn
yttrium:
Y
: Yb
ytterbium: Yb
: atomic number 15
phosphorus: atomic number 15
: atomic number 45
rhodium: atomic number 45
osmium: atomic number
76
magnesium: atomic number
12
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