Elements in Group 2A are known as the ________.
A) alkaline earth metals
B) alkali metals
C) chalcogens
D) halogens
E) noble gases
Correct Answer:
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Q98: Which formula/name pair is incorrect?
A)FeSO4 iron(II)sulfate
B)Fe2(SO3)3 iron(III)sulfite
C)FeS
Q99: Which one of the following compounds is
Q100: Barium reacts with a polyatomic ion to
Q101: Vertical columns of the periodic table are
Q102: Elements in Group 7A are known as
Q104: Elements in Group 1A are known as
Q105: Oxygen is a _ and nitrogen is
Q106: Elements in Group 6A are known as
Q107: Methane and ethane are both made up
Q108: The atomic number indicates _.
A)the number of
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