Each horizontal row of the periodic table includes elements with chemical characteristics that are, in general,
A) identical.
B) similar.
C) different.
D) sometimes similar and sometimes different.
Correct Answer:
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Q20: The most active of the following metals
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
Q26: The rare earth elements are not
A) extremely
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
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