Choose the INCORRECT statement about the alkaline earth metals.
A) The heavier Group 2 (2A) metals are nearly as active as the Group 1 (1A) metals.
B) They are the Group 1 (1A) family.
C) Magnesium metal is produced by the Dow process.
D) Salts of Sr and Ba provide vivid colors for pyrotechnic displays.
E) The source of magnesium is seawater and natural brines.
Correct Answer:
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Q54: Which of the following metal hydroxides has
Q55: Choose the INCORRECT statement.
A)Temporary hard water contains
Q56: In diborane,B2H6,the hybridization of each boron is:
A)sp3
B)sp2
C)sp3d
D)sp
E)sp3d2
Q57: In seawater,Mg2+ is about 1350 mg Mg2+/L.How
Q58: Both gypsum and plaster of Paris contain
Q60: Choose the INCORRECT statement.
A)The thermite reaction is:
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Q63: Choose the INCORRECT statement.
A)Diborane is B2H6.
B)B(OH)3 boric
Q64: Graphite and diamond are:
A)allotropes
B)amorphous substances
C)bivalent
D)elastomers
E)very unstable
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