The second most abundant element in the Earth's atmosphere is
A) oxygen.
B) argon.
C) nitrogen.
D) carbon dioxide.
Correct Answer:
Verified
Q38: A metal alloy, such as steel, is
A)
Q39: The symbol for oxygen is
A) Ox.
B) On.
C)
Q40: A bubble-producing soda is an example of
A)
Q41: Diamond, graphite, and buckyballs are
A) isotopes.
B) allotropes.
C)
Q42: About 75% of the mass of the
Q44: The vertical columns of elements in the
Q45: An example of a diatomic molecule of
Q46: Which of the following, along with O2,
Q47: About 85% by mass of Earth's core
Q48: The horizontal rows of elements in the
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