AP MCQ 02ABCDEFG PART 1

Question 01:

Which atom geometry is associated with sp³ hybridization?

Trigonal pyramidal
Trigonal planar
Octahedral
Linear

Question 02:

What is the total number of LONE pairs of electrons, in the complete Lewis diagram for SF₆?

0
6
18
36

Question 03:

Which one of the following covalent bonds would be the most polar?

H-H
O=O
O-H
F-H

Question 04:

Which of these cations has the ability to polarize an anion to the greatest extent?

Na⁺
Ba²⁺
Al³⁺
K⁺

Question 05:

Which of these molecules is polar (i.e., has a dipole moment)?

SF₆
NH₃
CO₂
BeCl₂

Question 06:

A hydrogen molecule H₂, will form from two hydrogen atoms at what point?

When the atoms are far apart to minimize repulsion
When the atoms are close together to maximize attraction
When the potential energy of the two atom system is at a minimum
Hydrogen atoms do not form molecules

Question 07:

The presence of pi bonds in a species may introduce the possibility of each of the following phenomena, EXCEPT

Resonance
cis/trans isomerism
A double bond
Hybridization

Question 08:

Ionic solids are brittle. Cleavage of the solid is most likely to happen when?

When the positive and negative ions are adjacent to one another
When ions of the same charge are adjacent to one another
When the covalent bonds are broken
When the intermolecular forces are weakest

Question 09:

How many electron density domains would you expect around the S atom, in SF₅^-?

5
6
7
8

Question 10:

Which of the following molecules is linear in terms of its atom geometry?

O₃
CH₄
BCl₃
CO₂

Question 11:

Which atom geometry is associated with sp hybridization?

Octahedral
Trigonal planar
Linear
Trigonal pyramidal

Question 12:

Which of the following pairs of species have the same atomic geometry?

H₂O and HF
SF₆ and PF₅
NH₃ and PF₃
NH₃ and BF₃

Question 13:

A molecule with trigonal pyramidal atom geometry, has what shape in terms of electron domains?

Trigonal pyramidal
Trigoanl planar
Tetrahedral
T-shaped

Question 14:

What two bond angles for F-S-F, occur in the molecule SF₆?

90 and 180 degrees
90 and 120 degrees
60 and 90 degrees
90 and 109.5 degrees

Question 15:

A molecule with a central atom with six electron density domains around it could have which atom geometry?

T-shaped
Tetrahedral
See-saw
Square based pyramid

Question 16:

Which of the following pairs are the two items correctly related?

T-shaped and ClF₃
Tetrahedral and SeF₄
Linear and O₃
Hexagonal and SF₆

Question 17:

How many possible resonance structures can be drawn for the SO₂ molecule?

0
1
2
3

Question 18:

How many valence electrons are there in the carbonate ion, CO₃^2-?

20
22
24
26

Question 19:

Which combination of metals is most likely to form an interstitial alloy?

One with metal A (atomic radius 165 pm) and metal B (atomic radius 161 pm)
One with metal A (atomic radius 225 pm) and metal B (atomic radius 223 pm)
One with metal A (atomic radius 200 pm) and metal B (atomic radius 70 pm)
One with metal A (atomic radius 193 pm) and metal B (atomic radius 188 pm)

Question 20:

sp hybridization around a central atom is associated with what bond angle around the same atom?

90°
109.5°
120°
180°

Question 21:

In which of the following species would one expect to find a pi bond?

CH₄
C₂H₄
C₂H₆
H₂

Question 22:

The three bonds between the C atom, and the three O atoms in the carbonate ion (CO₃^2-) are found to have identical bond strengths, and the bond lengths to one another. Which phenomenon best explains this observation?

Resonance
Hybridization
pi bonding
Formal charge

Question 23:

Which of the following ionic compounds would be expected to have the greatest degree of covalent character?

NaCl
KCl
CaCl₂
BeCl₂

Question 24:

Which of the following covalent molecules would one expect to have the greatest degree of ionic character?

H₂
O₂
HCl
HI

Question 25:

What phenomenom accounts for the fact that the carbonate ion exhibits carbon-oxygen bond lengths that are intermediate in length and strength, between a single carbon-oxygen bond, and a double carbon-oxygen bond?