Boric oxide is ________.
A) B2O
B) BO2
C) BO
D) B2O3
E) B2O4
Correct Answer:
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Q114: Which group 3A element is a metalloid?
A)B
B)Al
C)Ga
D)In
E)Tl
Q115: What is the formula of borax?
A)H3BO3
B)H2B4O7
C)P5O8
D)B2O3
E)Na2B4O7 ∙
Q116: The disilicate ion is _.
A)Si2O88-
B)Si2O76-
C)Si2O84-
D)Si2O86-
E)Si2O72-
Q117: SiO44- is the _ ion.
A)orthosilicate ion
B)silicide ion
C)thiosilicate
Q118: Tetraboric acid,H2B4O7,is prepared by heating boric acid,H3BO3
Q120: The correct name of H2CO3 is _.
A)hydrogen
Q121: Which one of the following compounds is
Q122: The oxidation state of oxygen in O2F2
Q123: Which compound would produce a basic aqueous
Q124: The oxidation state of chlorine in the
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