HomeMultiple choice, continued (3 points each). Name:__________________ Please circle your answer. There is only one correct answer to each question. 36. How many different resonance structures can be drawn for the molecule SO3 without having to violate the octet rule on the sulfur atom? A) 5 B) 4 C) 3 D) 2 37. The central atom in _______ does not violate the octet rule. A) CF4 B) KrF2 C) SF4 D) XeF4 38. For a given arrangement of ions, the lattice energy increases as ionic radius _________ and as ionic charge __________. A) increases, increases B) decreases, decreases C) increases, decreases D) decreases, increases 39. Of the molecules below, only ________ is nonpolar. A) HCl B) NH3 C) SO2 D) CO2 40. Using the table of bond dissociation energies, ∆H for the reaction 2HCl (g) + F2 (g) à 2HF (g) + Cl2 (g) is __________ kJ. Bond D (kJ/mol) H – Cl 431 F – F 155 H – F 567 Cl – Cl 242 A) –359 B) -223 C) 359 D) 223 41. Considering its Lewis structure, the electron-domain geometry of oxygen in OF2 is ___________. A) trigonal planar B) trigonal bipyramidal C) octahedral D) tetrahedral 42. The electron-domain geometry and the molecular geometry of ammonia, NH3, are __________ and __________, respectively. A) tetrahedral, trigonal pyramidal B) tetrahedral, trigonal planar C) bent, bent D) trigonal planar, bent

Multiple choice, continued (3 points each). Name:______________ Please circle your answer. There is only one correct answer to each question. 36. How many different resonance structures can be drawn for the molecule SO3 without having to violate the octet rule on the sulfur atom? A) 5 B) 4 C) 3 D) 2 37. The central atom in _ does not violate the octet rule. A) CF4 B) KrF2 C) SF4 D) XeF4 38. For a given arrangement of ions, the lattice energy increases as ionic radius _ and as ionic charge . A) increases, increases B) decreases, decreases C) increases, decreases D) decreases, increases 39. Of the molecules below, only is nonpolar. A) HCl B) NH3 C) SO2 D) CO2 40. Using the table of bond dissociation energies, ∆H for the reaction 2HCl (g) + F2 (g) à 2HF (g) + Cl2 (g) is kJ. Bond D (kJ/mol) H – Cl 431 F – F 155 H – F 567 Cl – Cl 242 A) –359 B) -223 C) 359 D) 223 41. Considering its Lewis structure, the electron-domain geometry of oxygen in OF2 is _. A) trigonal planar B) trigonal bipyramidal C) octahedral D) tetrahedral 42. The electron-domain geometry and the molecular geometry of ammonia, NH3, are and ____, respectively. A) tetrahedral, trigonal pyramidal B) tetrahedral, trigonal planar C) bent, bent D) trigonal planar, bent

0.0(0)

Studied by 0 people

View linked note

Learn

Practice Test

Spaced Repetition

Match

Flashcards

Card Sorting

1/7

There's no tags or description

Looks like no tags are added yet.

Study Analytics

Name	Mastery	Learn	Test	Matching	Spaced

No study sessions yet.

8 Terms

1

New cards

What is the electron-domain geometry of ammonia (NH3)?

Tetrahedral

2

New cards

What is the molecular geometry of ammonia (NH3)?

Trigonal pyramidal

3

New cards

How many electron domains are around the central atom in ammonia (NH3)?

Four electron domains.

4

New cards

According to VSEPR theory, what shape do four electron domains arrange themselves into?

Tetrahedral.

5

New cards

What effect does the lone pair have on the molecular geometry of ammonia (NH3)?

It causes the molecular geometry to be trigonal pyramidal instead of tetrahedral.

6

New cards

In ammonia (NH3), which atoms form bonding pairs with the central nitrogen atom?

Three hydrogen atoms.

7

New cards

Why do the bonding pairs in ammonia (NH3) get pushed closer together?

Due to the repulsion from the lone pair of electrons on the nitrogen atom.

8

New cards

What is the total number of bonding pairs and lone pairs around the nitrogen atom in ammonia (NH3)?

Three bonding pairs and one lone pair.