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Which,if any,of the following generalized formulas does not exist for interhalogen compounds? (X and Y represent different halogens. )


A) XY
B) XY2
C) XY3
D) XY5
E) All the above can represent stable interhalogen compounds.

F) C) and D)
G) B) and E)

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Which of the following oxides is most basic?


A) As2O3
B) P4O10
C) Sb2O3
D) Sb2O5
E) NO2

F) C) and D)
G) B) and E)

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Which of the following elements exists in allotropic forms?


A) silicon
B) germanium
C) carbon
D) lead
E) xenon

F) A) and D)
G) A) and C)

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Certain Period 2 elements exhibit behaviors similar to Period 3 elements immediately below and to the right.One of the interesting diagonal relationships occurs between boron and silicon.Which of the following is one of their similarities?


A) Both exhibit electrical properties of a conductor.
B) The oxoanions of both elements occur in extended ionic networks.
C) Both elements form compounds (boranes and silanes) that are good oxidizing agents.
D) Both elements are metalloids.
E) Both elements are unusually soft solids.

F) B) and D)
G) B) and C)

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Name two different classes (types)of hydride.

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Ionic hydr...

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Which one of the following elements is likely to exhibit the most violent and rapid reaction with water?


A) Na
B) Rb
C) Mg
D) Sr
E) Cl2

F) A) and D)
G) A) and C)

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In which of the following ways is lithium different from the other alkali metals?


A) Its salts are much more soluble in water than those of the other alkali metals.
B) It has an unusually high density.
C) It forms molecular compounds with the hydrocarbon groups of organic halides.
D) Its ionization energy is lower than expected.
E) It does not react with water at room temperature.

F) B) and E)
G) A) and E)

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The following statements applies to an element or elements from one of the main groups (1A through 8A).Identify the group number appropriate to each of the statements. a.This group contains the element with the lowest ionization potential of any element. b.The maximum oxidation number of any element in this group is +5.

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Name the three allotropes of carbon and briefly describe their properties and structures.

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Graphite is the stablest allotrope under...

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What are the products of the reaction of strontium hydride and water? SrH2(s) + H2O(l) \to


A) Sr2+(aq) + H2(g) + O2(g)
B) Sr2+(aq) + H2(g) + OH-(aq)
C) Sr(s) + H2(g) + OH-(aq)
D) Sr(s) + H3O+(aq)
E) None of these choices is correct.

F) A) and C)
G) C) and E)

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Write balanced equations,showing all reactants and products,to represent a.roasting of limestone (CaCO3)to give lime. b.tetraphosphorus decaoxide (P4O10)reacting with water to produce phosphoric acid.

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a.CaCO3(s) blured image CaO(s)+...

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If an alkali metal is represented by the symbol M,what is the formula of a.the oxide of M? b.the peroxide of M? c.the superoxide of M?

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The chemical that ranks first in production among all industrial chemicals is


A) NH3,ammonia.
B) H3PO4,phosphoric acid.
C) NaOH,sodium hydroxide.
D) Na2CO3,sodium carbonate.
E) H2SO4,sulfuric acid.

F) C) and E)
G) B) and C)

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Which of the following is an accurate comparison of the properties of nitrogen and oxygen?


A) Both oxygen and nitrogen form anions easily.
B) Oxygen is a strong oxidizing agent while nitrogen is a strong reducing agent.
C) Nitrogen uses more oxidation states in its compounds than oxygen does.
D) Nitrogen is more reactive than oxygen.
E) Nitrogen does not form naturally-occurring compounds,but oxygen does.

F) C) and D)
G) C) and E)

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Predict the products for the following set of reactants. Bi(s) + Cl2(g) \to


A) BiCl
B) BiCl2
C) BiCl3
D) BiCl4
E) BiCl5

F) A) and E)
G) A) and D)

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Predict the products for the reaction of the following set of reactants. Ca(s) + H2(g) \to


A) CaH(s)
B) CaH2(s)
C) Ca2H3(s)
D) Ca3H2(s)
E) None of these choices is correct.

F) B) and E)
G) A) and E)

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Carbon monoxide's toxicity is related to its ability to bond to iron in hemoglobin.

A) True
B) False

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Predict the products for the following set of reactants. Cl2(g) + I-(aq) \to


A) ICl
B) ICl2
C) ICl3
D) I2 + Cl-
E) I + Cl2-

F) A) and D)
G) A) and E)

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