Question 1

Which of the following hydrides is expected to have the highest melting point?

Accepted Answer

A) H2S 
B) HF 
C) H2Se 
D) MgH2 
A) H2S 
B) HF 
C) H2Se 
D) MgH2

Question 2

The double-stranded silicate ion shown in the picture below combines with calcium and magnesium to form the mineral tremolite,which is a form of asbestos.What is the formula and charge of the repeating unit of the silicate ion?

Accepted Answer

A) SiO32- 
B) Si4O116- 
C) Si6O1710- 
D) Si12O3012- 
A) SiO32- 
B) Si4O116- 
C) Si6O1710- 
D) Si12O3012-

Question 3

Metals tend to react with the halogens to form metal halides.What is the reactivity order for the halogens?

Accepted Answer

A) F2 > Cl2 > Br2 > I2 
B) Cl2 > F2 > Br2 > I2 
C) Br2 > I2 > Cl2 > F2 
D) I2 > Br2 > Cl2 > F2 
A) F2 > Cl2 > Br2 > I2 
B) Cl2 > F2 > Br2 > I2 
C) Br2 > I2 > Cl2 > F2 
D) I2 > Br2 > Cl2 > F2

Question 4

As one traverses the periodic table from left to right,the effective nuclear charge Zeff increases.As a result of this the periodic properties of

Accepted Answer

A) atomic size increases,IE increases,EA increases and electronegativity increases. 
B) atomic size decreases,IE increases,EA increases and electronegativity increases. 
C) atomic size decreases,IE decreases,EA increases and electronegativity increases. 
D) atomic size decreases,IE increases,EA decreases and electronegativity increases. 
A) atomic size increases,IE increases,EA increases and electronegativity increases. 
B) atomic size decreases,IE increases,EA increases and electronegativity increases. 
C) atomic size decreases,IE decreases,EA increases and electronegativity increases. 
D) atomic size decreases,IE increases,EA decreases and electronegativity increases.

Question 5

-Which of the elements indicated on the above periodic table is least electronegative?

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 6

Which of the following elements exhibits the most metallic character?

Accepted Answer

A) Ga 
B) Ge 
C) C 
D) S 
A) Ga 
B) Ge 
C) C 
D) S

Question 7

Which of the following reactions is inconsistent with the chemistry of the halogens?

Accepted Answer

A) H2(g)+ Cl2(g)→ 2 HCl(g) 
B) Fe(s)+ F2(g)→ FeF2(s) 
C) Br2(l)+ 2 Cl-(aq)→ 2 Br-(aq)+ Cl2(g) 
D) I2(s)+ 3 Cl2(g)→ 2 ICl3(s) 
A) H2(g)+ Cl2(g)→ 2 HCl(g) 
B) Fe(s)+ F2(g)→ FeF2(s) 
C) Br2(l)+ 2 Cl-(aq)→ 2 Br-(aq)+ Cl2(g) 
D) I2(s)+ 3 Cl2(g)→ 2 ICl3(s)

Question 8

What is not a reaction commonly associated with carbon dioxide?

Accepted Answer

A) Oxyhemoglobin + CO2 ⇌ Carboxyhemoglobin + O2 
B) C6H12O6(aq)+ 6 O2(g)⇌ 6 CO2(g)+ 6 H2O(l) 
C) CaCO3(s)+ heat → CaO(s)+ CO2(g) 
D) CO2(g)+ H2O(l)⇌ H+(aq)+ HCO3-(aq) 
A) Oxyhemoglobin + CO2 ⇌ Carboxyhemoglobin + O2 
B) C6H12O6(aq)+ 6 O2(g)⇌ 6 CO2(g)+ 6 H2O(l) 
C) CaCO3(s)+ heat → CaO(s)+ CO2(g) 
D) CO2(g)+ H2O(l)⇌ H+(aq)+ HCO3-(aq)

Question 9

The product of the reaction of lithium with nitrogen is ________.

Accepted Answer

The answer of The product of the reaction of lithium...

Question 10

The elements indicated by the shaded area in the following periodic table are all

Accepted Answer

A) main-group elements. 
B) main-group metals. 
C) nonmetals. 
D) semimetals. 
A) main-group elements. 
B) main-group metals. 
C) nonmetals. 
D) semimetals.

Question 11

Which element of group 6A has the highest melting point?

Accepted Answer

A) Ge 
B) As 
C) Po 
D) Se 
A) Ge 
B) As 
C) Po 
D) Se

Question 12

Which of the halogens forms more than one perhalic acid?

Accepted Answer

A) F 
B) Cl 
C) Br 
D) I 
A) F 
B) Cl 
C) Br 
D) I

Question 13

What is an appropriate method for the synthesis of phosphorus?

Accepted Answer

A) 2 Ca3(PO4)2(s)+ 10 C(s)+ 6 SiO2(s)+ heat → P4(g)+ 10 CO(g)+ 6 CaSiO3(l) 
B) 4 PCl5(s)+ heat → P4(g)+ 10 Cl2(g) 
C) 4 PH3(g)+ heat → P4(g)+ 6 H2(g) 
D) P4O6(s)+ heat → P4(g)+ 3 O2(g) 
A) 2 Ca3(PO4)2(s)+ 10 C(s)+ 6 SiO2(s)+ heat → P4(g)+ 10 CO(g)+ 6 CaSiO3(l) 
B) 4 PCl5(s)+ heat → P4(g)+ 10 Cl2(g) 
C) 4 PH3(g)+ heat → P4(g)+ 6 H2(g) 
D) P4O6(s)+ heat → P4(g)+ 3 O2(g)

Question 14

What are the three most abundant elements in the human body?

Accepted Answer

A) H,C,O 
B) H,O,Fe 
C) H,C,N 
D) H,C,P 
A) H,C,O 
B) H,O,Fe 
C) H,C,N 
D) H,C,P

Question 15

Which element of group 6A has the highest boiling point?

Accepted Answer

A) Al 
B) O 
C) Po 
D) As 
A) Al 
B) O 
C) Po 
D) As

Question 16

-Which element shown on the periodic table above forms a covalent binary hydride with the formula MX4?

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 17

Which alkali metal reacts with nitrogen to form a nitride?

Accepted Answer

A) Li 
B) Na 
C) K 
D) All of these 
A) Li 
B) Na 
C) K 
D) All of these

Question 18

What is the Lewis electron dot structure for the hydride ion?

Accepted Answer

A) H+ 
B) H: - 
C) H ∙ 
D) H3O+ 
A) H+ 
B) H: - 
C) H ∙ 
D) H3O+

Question 19

Approximately 90% of the Earth's crust is composed of what type of compounds?

Accepted Answer

A) carbonates 
B) oxides 
C) silicates 
D) sulfates 
A) carbonates 
B) oxides 
C) silicates 
D) sulfates

Question 20

Which is classified as an amphoteric binary oxide?

Accepted Answer

A) B2O3 
B) CO2 
C) Ga2O3 
D) Rb2O 
A) B2O3 
B) CO2 
C) Ga2O3 
D) Rb2O

Exam 22: The Main-Group Elements

Which of the following hydrides is expected to have the highest melting point?

The double-stranded silicate ion shown in the picture below combines with calcium and magnesium to form the mineral tremolite,which is a form of asbestos.What is the formula and charge of the repeating unit of the silicate ion?

Metals tend to react with the halogens to form metal halides.What is the reactivity order for the halogens?

As one traverses the periodic table from left to right,the effective nuclear charge Zeff increases.As a result of this the periodic properties of

-Which of the elements indicated on the above periodic table is least electronegative?

Which of the following elements exhibits the most metallic character?

Which of the following reactions is inconsistent with the chemistry of the halogens?

What is not a reaction commonly associated with carbon dioxide?

The product of the reaction of lithium with nitrogen is ________.

The elements indicated by the shaded area in the following periodic table are all

Which element of group 6A has the highest melting point?

Which of the halogens forms more than one perhalic acid?

What is an appropriate method for the synthesis of phosphorus?

What are the three most abundant elements in the human body?

Which element of group 6A has the highest boiling point?

-Which element shown on the periodic table above forms a covalent binary hydride with the formula MX4?

Which alkali metal reacts with nitrogen to form a nitride?

What is the Lewis electron dot structure for the hydride ion?

Approximately 90% of the Earth's crust is composed of what type of compounds?

Which is classified as an amphoteric binary oxide?

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Covalent Compounds: Bonding Theories and Molecular Structure

Thermochemistry: Chemical Energy

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Filters

As one traverses the periodic table from left to right,the effective nuclear charge Z_eff increases.As a result of this the periodic properties of

-Which element shown on the periodic table above forms a covalent binary hydride with the formula MX₄?