The rare earth elements are not
A) extremely rare in the earth's crust.
B) found in ores in the United States.
C) used in exceptionally strong magnets.
D) used in certain lasers and other light sources.
Correct Answer:
Verified
Q21: An atom whose outer electron shell lacks
Q22: A bonding molecular orbital
A) always consists of
Q23: An element that can form an ionic
Q24: A family of elements whose atoms react
Q25: Each horizontal row of the periodic table
Q27: Ionic compounds in the solid state
A) always
Q28: Organic compounds
A) are covalent and contain carbon.
B)
Q29: Each electron shell in an atom contains
A)
Q30: Table salt, NaCl, consists of
A) molecules of
Q31: A free radical is extremely reactive because
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