Question 1

How many $ \sigma $- and $\pi $-bonds, respectively,Are there in peroxyacetylnitrate,CH3C(O)O-ONO2?

Accepted Answer

A)  9 and 2 
B)  10 and 2 
C)  10 and 1 
D)  8 and 4 
E)  8 and 2 
A)  9 and 2 
B)  10 and 2 
C)  10 and 1 
D)  8 and 4 
E)  8 and 2

Question 2

Dinitrogen monoxide has a dipole moment.Draw the arrangement of atoms and indicate the shape of dinitrogen monoxide.

Accepted Answer

The answer of Dinitrogen monoxide has a dipole moment.Draw the...

Question 3

What is wrong with the following Lewis structure? $$O - C \equiv O$$

Accepted Answer

A)  The valence electron count 
B)  The positioning of the carbon atom 
C)  The distribution of valence electrons 
D)  The charge on the carbon atom 
E)  The dipole of the molecule 
A)  The valence electron count 
B)  The positioning of the carbon atom 
C)  The distribution of valence electrons 
D)  The charge on the carbon atom 
E)  The dipole of the molecule

Question 4

Which of the following has bond angles slightly less than 109$\circ$?

Accepted Answer

A)  NH4+ 
B)  ClO4- 
C)  BrO3- 
D)  PO43- 
E)  BH4- 
A)  NH4+ 
B)  ClO4- 
C)  BrO3- 
D)  PO43- 
E)  BH4-

Question 5

Name all the angles in a trigonal planar geometry.

Accepted Answer

The answer of Name all the angles in a trigonal...

Question 6

All of the following are polar except

Accepted Answer

A)  NO2−.   
B)  SO32−.   
C)  NO2Cl. 
D)  NO3−.  
E)  N2O (N is the central atom).  
A)  NO2−.   
B)  SO32−.   
C)  NO2Cl. 
D)  NO3−.  
E)  N2O (N is the central atom).

Question 7

What is the hybridization of the bolded atoms NNC, from left to right,
In azidocarbonamide,H2NC(O)NNC(O)NH2?

Accepted Answer

A)  sp3, sp, sp2  
B)  sp2, sp, sp3  
C)  sp2, sp, sp2  
D)  sp, sp, sp2  
E)  sp2, sp2, sp2  
A)  sp3, sp, sp2  
B)  sp2, sp, sp3  
C)  sp2, sp, sp2  
D)  sp, sp, sp2  
E)  sp2, sp2, sp2

Question 8

Which of the following has the highest melting point?

Accepted Answer

A)  KF 
B)  KI 
C)  RbF 
D)  KBr 
E)  KCl 
A)  KF 
B)  KI 
C)  RbF 
D)  KBr 
E)  KCl

Question 9

In the "best" Lewis structure of XeO4,there are two double bonds and the formal charge on Xe is zero.

Accepted Answer

A) True 
 B)False

Question 10

If the following all crystallize in the same type of structure, which has the highest lattice energy?

Accepted Answer

A)  LiCl 
B)  KF 
C)  KBr 
D)  KCl 
E)  LiF 
A)  LiCl 
B)  KF 
C)  KBr 
D)  KCl 
E)  LiF

Question 11

Predict the electron arrangement in NO2-.

Accepted Answer

Question 12

Why are the N-O bond lengths in NO3- the same?

Accepted Answer

The explan

Question 13

In the NO molecule,which atom makes the larger contribution to the lowest energy molecular orbital?

Accepted Answer

The answer of In the NO molecule,which atom makes the...

Question 14

Which of the following species are radicals?
A) CH2O
B) HCN
C) HclO
D) ClONO2 
E) ClO

Accepted Answer

Question 15

Which of the following is polar?

Accepted Answer

A)  CO32- 
B)  O3  
C)  XeF2  
D)  I3- 
E)  NON 
A)  CO32- 
B)  O3  
C)  XeF2  
D)  I3- 
E)  NON

Question 16

Which of the following compounds is the least stable?

Accepted Answer

A)  CH4  
B)  SnH4  
C)  SiH4  
D)  GeH4  
E)  PbH4  
A)  CH4  
B)  SnH4  
C)  SiH4  
D)  GeH4  
E)  PbH4

Question 17

The structure of Tylenol is given below:   What hybrid orbitals are used on the N atom and the carbonyl carbon,
Respectively?

Accepted Answer

A)  sp3 and sp2 
B)  sp2 and sp2 
C)  sp3 and sp3 
D)  sp2 and sp 
E)  sp3 and sp 
A)  sp3 and sp2 
B)  sp2 and sp2 
C)  sp3 and sp3 
D)  sp2 and sp 
E)  sp3 and sp

Question 18

Which of the following is diamagnetic?

Accepted Answer

A)  O22- 
B)  S2 
C)  O2- 
D)  O2+  
A)  O22- 
B)  S2 
C)  O2- 
D)  O2+

Question 19

White phosphorus is composed of tetrahedral molecules of P4 in which every P atom is connected to three other P atoms . In the Lewis structure of P4, There are

Accepted Answer

A)  3 bonding pairs and 4 lone pairs of electrons. 
B)  6 bonding pairs and 2 lone pairs of electrons. 
C)  5 bonding pairs and 4 lone pairs of electrons. 
D)  6 bonding pairs and no lone pairs of electrons. 
E)  6 bonding pairs and 4 lone pairs of electrons. 
A)  3 bonding pairs and 4 lone pairs of electrons. 
B)  6 bonding pairs and 2 lone pairs of electrons. 
C)  5 bonding pairs and 4 lone pairs of electrons. 
D)  6 bonding pairs and no lone pairs of electrons. 
E)  6 bonding pairs and 4 lone pairs of electrons.

Question 20

All the following have an angular shape except

Accepted Answer

A)  HOCl. 
B)  S32-. 
C)  I3-. 
D)  ClO2-. 
E)  NH2-. 
A)  HOCl. 
B)  S32-. 
C)  I3-. 
D)  ClO2-. 
E)  NH2-.

How many $\sigma$ - and $\pi$ -bonds, respectively,Are there in peroxyacetylnitrate,CH₃C(O)O-ONO₂?

Dinitrogen monoxide has a dipole moment.Draw the arrangement of atoms and indicate the shape of dinitrogen monoxide.

What is wrong with the following Lewis structure? $O - C \equiv O$

Which of the following has bond angles slightly less than 109^$\circ$?

Name all the angles in a trigonal planar geometry.

All of the following are polar except

What is the hybridization of the bolded atoms NNC, from left to right, In azidocarbonamide,H₂NC(O)NNC(O)NH₂?

Which of the following has the highest melting point?

In the "best" Lewis structure of XeO₄,there are two double bonds and the formal charge on Xe is zero.

If the following all crystallize in the same type of structure, which has the highest lattice energy?

Predict the electron arrangement in NO₂^-.

Why are the N-O bond lengths in NO₃^- the same?

In the NO molecule,which atom makes the larger contribution to the lowest energy molecular orbital?

Which of the following species are radicals? A) CH₂O B) HCN C) HclO D) ClONO₂ E) ClO

Which of the following is polar?

Which of the following compounds is the least stable?

The structure of Tylenol is given below: What hybrid orbitals are used on the N atom and the carbonyl carbon, Respectively?

Which of the following is diamagnetic?

White phosphorus is composed of tetrahedral molecules of P₄ in which every P atom is connected to three other P atoms . In the Lewis structure of P₄, There are

All the following have an angular shape except

Atoms

States of Matter

Thermodynamics

Equilibrium

Reactions

Kinetics

The Main-Group Elements

The D-Block Elements

Nuclear Chemistry

Organic Chemistry

Filters

Exam 2: Molecules

How many σ \sigma σ - and π\pi π -bonds, respectively,Are there in peroxyacetylnitrate,CH3C(O)O-ONO2?

Dinitrogen monoxide has a dipole moment.Draw the arrangement of atoms and indicate the shape of dinitrogen monoxide.

What is wrong with the following Lewis structure? O−C≡OO - C \equiv OO−C≡O

Which of the following has bond angles slightly less than 109 ∘\circ∘ ?

Name all the angles in a trigonal planar geometry.

All of the following are polar except

What is the hybridization of the bolded atoms NNC, from left to right, In azidocarbonamide,H2NC(O)NNC(O)NH2?

Which of the following has the highest melting point?

In the "best" Lewis structure of XeO4,there are two double bonds and the formal charge on Xe is zero.

If the following all crystallize in the same type of structure, which has the highest lattice energy?

Predict the electron arrangement in NO2-.

Why are the N-O bond lengths in NO3- the same?

In the NO molecule,which atom makes the larger contribution to the lowest energy molecular orbital?

Which of the following species are radicals? A) CH2O B) HCN C) HclO D) ClONO2 E) ClO

Which of the following is polar?

Which of the following compounds is the least stable?

The structure of Tylenol is given below: What hybrid orbitals are used on the N atom and the carbonyl carbon, Respectively?

Which of the following is diamagnetic?

White phosphorus is composed of tetrahedral molecules of P4 in which every P atom is connected to three other P atoms . In the Lewis structure of P4, There are

All the following have an angular shape except

Atoms

States of Matter

Thermodynamics

Equilibrium

Reactions

Kinetics

The Main-Group Elements

The D-Block Elements

Nuclear Chemistry

Organic Chemistry

Filters

How many $\sigma$ - and $\pi$ -bonds, respectively,Are there in peroxyacetylnitrate,CH₃C(O)O-ONO₂?

What is wrong with the following Lewis structure? $O - C \equiv O$

Which of the following has bond angles slightly less than 109^$\circ$?

What is the hybridization of the bolded atoms NNC, from left to right, In azidocarbonamide,H₂NC(O)NNC(O)NH₂?

In the "best" Lewis structure of XeO₄,there are two double bonds and the formal charge on Xe is zero.

Predict the electron arrangement in NO₂^-.

Why are the N-O bond lengths in NO₃^- the same?

Which of the following species are radicals? A) CH₂O B) HCN C) HclO D) ClONO₂ E) ClO

White phosphorus is composed of tetrahedral molecules of P₄ in which every P atom is connected to three other P atoms . In the Lewis structure of P₄, There are