Question 1

-Which of the elements indicated on the above periodic table is the group 7A element with the largest atomic radius?

Accepted Answer

A) element A 
B) element B 
C) element C 
D) element D 
A) element A 
B) element B 
C) element C 
D) element D

Question 2

Which of the following are properties not typically associated with second row elements?

Accepted Answer

A) Ability to form multiple bonds easily. 
B) Ability to form good π bond overlap. 
C) Ability to form covalent networks. 
D) Small sizes of atoms. 
A) Ability to form multiple bonds easily. 
B) Ability to form good π bond overlap. 
C) Ability to form covalent networks. 
D) Small sizes of atoms.

Question 3

In which set are all compounds considered to be ionic binary hydrides?

Accepted Answer

A) LiH,KH,MgH2,BaH2 
B) MgH2,SrH2,AlH3,SiH4 
C) MgH2,B2H6,CH4,NH3 
D) MgH2,AlH3,SiH4,H2Se 
A) LiH,KH,MgH2,BaH2 
B) MgH2,SrH2,AlH3,SiH4 
C) MgH2,B2H6,CH4,NH3 
D) MgH2,AlH3,SiH4,H2Se

Question 4

Which reaction is not consistent with the chemistry of binary oxides?

Accepted Answer

A) Na2O(s)+ H2O(l)→ 2 Na+(aq)+ 2 OH-(aq) 
B) SiO2(s)+ 2 OH-(aq)→ SiO32-(aq)+ H2O(l) 
C) Al2O3(s)+ 6 H+(aq)→ 2 Al3+(aq)+ 3 H2O(l) 
D) N2O5(aq)+ 2 H+(aq)→ 2 NO2+(aq)+ H2O(l) 
A) Na2O(s)+ H2O(l)→ 2 Na+(aq)+ 2 OH-(aq) 
B) SiO2(s)+ 2 OH-(aq)→ SiO32-(aq)+ H2O(l) 
C) Al2O3(s)+ 6 H+(aq)→ 2 Al3+(aq)+ 3 H2O(l) 
D) N2O5(aq)+ 2 H+(aq)→ 2 NO2+(aq)+ H2O(l)

Question 5

Atomic radius of main-group elements generally

Accepted Answer

A) increases from left to right across a period and increases down a group. 
B) increases from left to right across a period and decreases down a group. 
C) decreases from left to right across a period and increases down a group. 
D) decreases from left to right across a period and decreases down a group. 
A) increases from left to right across a period and increases down a group. 
B) increases from left to right across a period and decreases down a group. 
C) decreases from left to right across a period and increases down a group. 
D) decreases from left to right across a period and decreases down a group.

Question 6

The infinitely extended silicate ion shown in the picture below combines with calcium and magnesium to form the mineral diopside.What is the formula and charge of the repeating unit of the silicate ion?

Accepted Answer

A) SiO32- 
B) Si2O64- 
C) Si3O108- 
D) Si6O2424- 
A) SiO32- 
B) Si2O64- 
C) Si3O108- 
D) Si6O2424-

Question 7

The silicate ion shown in the picture below combines with beryllium and aluminum to form the mineral beryl.What is the formula and charge of the silicate ion?

Accepted Answer

A) Si6O612+ 
B) Si6O122- 
C) Si6O1812- 
D) Si6O2424- 
A) Si6O612+ 
B) Si6O122- 
C) Si6O1812- 
D) Si6O2424-

Question 8

-Which element indicated on the above periodic table forms a binary oxide with molecular structure (2)shown above?

Accepted Answer

A) element A 
B) element B 
C) element C 
D) element D 
A) element A 
B) element B 
C) element C 
D) element D

Question 9

Which statement is not consistent with the chemistry of group 4A elements?

Accepted Answer

A) Elements have the outer valence electron configuration of ns2np2. 
B) The most common oxidation state for the elements of the group is +4. 
C) The +4 oxidation state compounds are ionic and the +2 oxidation state compounds are covalent. 
D) The +2 oxidation state for lead is the most stable. 
A) Elements have the outer valence electron configuration of ns2np2. 
B) The most common oxidation state for the elements of the group is +4. 
C) The +4 oxidation state compounds are ionic and the +2 oxidation state compounds are covalent. 
D) The +2 oxidation state for lead is the most stable.

Question 10

What is the molecular structure of germanium that is used in semiconductors?

Accepted Answer

A) body centered 
B) diamond-like 
C) graphite-like 
D) simple cubic 
A) body centered 
B) diamond-like 
C) graphite-like 
D) simple cubic

Question 11

Which of the following statements are true about elements with metallic character?

Accepted Answer

A) Elements with a low ionization energy are more likely to be nonmetallic. 
B) Elements with a high electronegativity are more likely to be metallic. 
C) Elements with a high electronegativity and low ionization energy are more likely to be metallic. 
D) Elements with a low electronegativity,low ionization energy,and malleability are more likely to be metallic. 
A) Elements with a low ionization energy are more likely to be nonmetallic. 
B) Elements with a high electronegativity are more likely to be metallic. 
C) Elements with a high electronegativity and low ionization energy are more likely to be metallic. 
D) Elements with a low electronegativity,low ionization energy,and malleability are more likely to be metallic.

Question 12

Why does Cu dissolve in concentrated nitric acid but not in concentrated hydrochloric acid?

Accepted Answer

A) The chloride ion is a stronger oxidizing agent than the nitrate ion. 
B) The hydrochloric acid is not as strong as nitric acid. 
C) The hydrochloric acid produces insufficient hydronium ion to react with the copper. 
D) The nitrate ion is a stronger oxidizing agent than the hydronium ion. 
A) The chloride ion is a stronger oxidizing agent than the nitrate ion. 
B) The hydrochloric acid is not as strong as nitric acid. 
C) The hydrochloric acid produces insufficient hydronium ion to react with the copper. 
D) The nitrate ion is a stronger oxidizing agent than the hydronium ion.

Question 13

Which is not a chemical reaction of the alkali metal potassium?

Accepted Answer

A) K(s)+ O2(g)→ KO2(s) 
B) 2 K(s)+ 2 H2O(l)→ 2 KOH(aq)+ H2(g) 
C) 2 K(s)+ H2(g)→ 2 KH(s) 
D) 6 K(s)+ N2(g)→ 2 K3N(s) 
A) K(s)+ O2(g)→ KO2(s) 
B) 2 K(s)+ 2 H2O(l)→ 2 KOH(aq)+ H2(g) 
C) 2 K(s)+ H2(g)→ 2 KH(s) 
D) 6 K(s)+ N2(g)→ 2 K3N(s)

Question 14

What is the name for the group of elements indicated by the shaded portion of the periodic table?

Accepted Answer

A) alkaline earth metals 
B) group 3A elements 
C) halogens 
D) noble gases 
A) alkaline earth metals 
B) group 3A elements 
C) halogens 
D) noble gases

Question 15

What are the three most abundant elements in the Earth's crust?

Accepted Answer

A) H,O,Al 
B) O,Al,Si 
C) O,Si,Ca 
D) Al,C,Fe 
A) H,O,Al 
B) O,Al,Si 
C) O,Si,Ca 
D) Al,C,Fe

Question 16

What is not a characteristic of white phosphorus?

Accepted Answer

A) At temperatures less than 0°C it is converted to red phosphorus. 
B) It bursts into flames when exposed to air,thus it is stored under water. 
C) It has a low melting point (44°
C) . 
D) It is soluble in nonpolar solvent such as carbon disulfide CS2. 
A) At temperatures less than 0°C it is converted to red phosphorus. 
B) It bursts into flames when exposed to air,thus it is stored under water. 
C) It has a low melting point (44°
C) . 
D) It is soluble in nonpolar solvent such as carbon disulfide CS2.

Question 17

Which element of group 5A has the highest melting point?

Accepted Answer

A) nitrogen 
B) white phosphorus 
C) antimony 
D) bismuth 
A) nitrogen 
B) white phosphorus 
C) antimony 
D) bismuth

Question 18

What is the most metallic element of group 4A?

Accepted Answer

A) Ge 
B) Sb 
C) Sn 
D) Pb 
A) Ge 
B) Sb 
C) Sn 
D) Pb

Question 19

Ring strain the cause of high molecular reactivity that occurs when the angles in a ring of atoms are not close to "normal"bond angles (90° when the bonds are formed by atoms using pure p-orbitals,109.5° using sp3 hybrid orbitals,120° using sp2 orbitals,etc. ).The angles in white phosphorus,P4,measure ________,and P4 ________ expected to exhibit ring strain and be very reactive.

Accepted Answer

Question 20

Which one of the following binary oxides is the most basic?

Accepted Answer

A) Na2O 
B) PbO2 
C) I2O5 
D) TeO3 
A) Na2O 
B) PbO2 
C) I2O5 
D) TeO3

Exam 22: The Main-Group Elements

-Which of the elements indicated on the above periodic table is the group 7A element with the largest atomic radius?

Which of the following are properties not typically associated with second row elements?

In which set are all compounds considered to be ionic binary hydrides?

Which reaction is not consistent with the chemistry of binary oxides?

Atomic radius of main-group elements generally

The infinitely extended silicate ion shown in the picture below combines with calcium and magnesium to form the mineral diopside.What is the formula and charge of the repeating unit of the silicate ion?

The silicate ion shown in the picture below combines with beryllium and aluminum to form the mineral beryl.What is the formula and charge of the silicate ion?

-Which element indicated on the above periodic table forms a binary oxide with molecular structure (2)shown above?

Which statement is not consistent with the chemistry of group 4A elements?

What is the molecular structure of germanium that is used in semiconductors?

Which of the following statements are true about elements with metallic character?

Why does Cu dissolve in concentrated nitric acid but not in concentrated hydrochloric acid?

Which is not a chemical reaction of the alkali metal potassium?

What is the name for the group of elements indicated by the shaded portion of the periodic table?

What are the three most abundant elements in the Earth's crust?

What is not a characteristic of white phosphorus?

Which element of group 5A has the highest melting point?

What is the most metallic element of group 4A?

Which one of the following binary oxides is the most basic?

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