Which statement regarding the organization of the periodic table is not correct?
A) Mendeleev arranged known elements with similar chemical properties in columns.
B) Mendeleev's predictions of the chemical properties of unknown elements facilitated their discovery.
C) Mendeleev arranged the elements in order of increasing atomic mass.
D) The modern periodic table arranges elements in order of increasing atomic number.
E) The elements go from gases to liquids to solids in order down the columns in Mendeleev's periodic table.
Correct Answer:
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Q35: What is the symbol of the ion
Q36: He is the symbol for _
A)hydrogen.
B)hafnium.
C)mercury.
D)helium.
E)holmium.
Q37: There are three major isotopes of silicon:
Q38: Ca is the symbol for _
A)cesium.
B)cobalt.
C)cadmium.
D)calcium.
E)cerium.
Q39: A hypothetical element has two stable isotopes:
Q41: Iron is best described as a(n) _
A)metalloid.
B)transition
Q42: Elements 21-30 are known as _
A)alkaline earths.
B)chalcogens.
C)halides.
D)transition
Q43: The elements below are used in fireworks.
Q44: Dalton's law of multiple proportions deals with
Q45: When 10.0 g of sulfur is combined
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