Essential Organic Chemistry 2nd Edition Bruice - Test Bank

Essential Organic Chemistry, 2e (Bruice)

Chapter 1  

Electronic Structure and Covalent Bonding

1)

Atoms with the same number of protons but different numbers of neutrons are called __________.

Answer: 

isotopes

Section: 

1.1

2)

What isotope of chlorine has the same number of neutrons as Argon-38?

A)

17Cl

B)

35Cl

C)

36Cl

D)

37Cl

E)

38Cl

Answer: 

D

Section: 

1.1

3)

Which statement is incorrect about the atomic number of an atom?

A)

It equals the number of protons in its nucleus.

B)

It equals the number of electrons outside the nucleus.

C)

It equals the sum of its protons and neutrons..

D)

It is a whole number.

E)

It is given on the Periodic Table.

Answer: 

C

Section: 

1.1

4)

Which of the following elements does this electronic configuration represent?

1s2 2s2 2p5

A)

F

B)

C

C)

N

D)

Al

E)

O

Answer: 

A

Section: 

1.2

5)

Which of the following is the electronic configuration of the element Fe?

A)

1s2 2s2 2p6 3s2 3p6 4s2 3d6

B)

1s2 2s2 2p6 3s2 3p8 3d6

C)

1s2 2s2 2p8 3s2 3p6 4s2 3d6

D)

1s2 2s2 2p6 3s2 3p6 4s2 4d6

E)

1s2 2s2 2p6 3s2 3p6 4s2 4p6

Answer: 

A

Section: 

1.2

6)

Ar, K+, Cl- are isoelectronic elements (elements with the same number of electrons). What orbital does the last electron occupy?

Answer: 

3p orbital

Section: 

1.2

7)

The atomic number of boron is 5. The correct electronic configuration of boron is __________.

A)

1s2 2s3

B)

1s2 2p3

C)

1s2 2s2 2p1

D)

2s2 2p3

E)

1s2 2s2 3s1

Answer: 

C

Section: 

1.2

8)

Which of the following statements correctly describes the third electron shell that surrounds the nucleus of an atom?

A)

The third shell contains only s and p atomic orbitals.

B)

The maximum number of electrons that can occupy the third shell is 18.

C)

The total number of atomic orbitals present in the third shell is 16.

D)

The third shell can contain f orbitals.

E)

none of the above

Answer: 

B

Section: 

1.2

9)

Which of the following describes a hydride ion?

A)

a negatively charged hydrogen ion containing a pair of electrons

B)

a positively charged hydrogen ion

C)

a hydrogen ion containing a single electron

D)

a negatively charged OH ion

E)

a proton containing an extra electron

Answer: 

A

Section: 

1.3

10)

Rank the following atoms in increasing electronegativity.

A)

N, Na, Si, O, C

B)

C, N, O, Na,  Si

C)

O, N, C, Si, Na

D)

Si, C, N, O, Na

E)

Na, Si, C, N, O

Answer: