Chapter 3 Atomic Structure And Properties Exam Questions

Chapter 3: Atomic Structure and Properties

Test Bank

Type: fill-in-blank

Title: Chapter 03 Question 01

1) John Dalton developed the idea that all matter was composed of solid indivisible atoms. As a result in any equation, the mass of the products is equal to the mass of ____________

Section reference: 3.1 .

a. reactants

Type: multiple response question

Title: Chapter 03 Question 02

2) The results of Rutherford’s experiment which fired α-particles at a thin metal film were? Please select all that apply.

Section reference: 3.1 Figure 3.3

a. All the α-particles passed straight through.

b. Most of the α-particles passed straight through with only minor reflections.

c. A small number of α-particles were deflected through angles greater than 90°.

d. All of the α-particles were deflected through angles greater than 90°.

Type: multiple choice question

nhTitle: Chapter 03 Question 03

3) The frequency of radiation used in a typical microwave oven is 1.00 × 10¹¹ Hz. What is the energy of a mole of microwave photons with this frequency?

b. 3.99 J mol^–1

c. 399 J mol^–1

d. 0.39 J mol^–1

Type: matching question

Title: Chapter 03 Question 04

4) Window glass blocks out short wavelength energetic photons but allows the longer wavelength, lower energy photons in the visible and infrared region to pass through. This process means that the following statements can be paired together.

a. The cancer charities advise people to stay inside during the hottest part of the day because = skin-damaging, short wavelength, UV radiation is most abundant during the hottest part of the day. UV radiation cannot penetrate buildings, even through the windows

b. Closing the curtains in a house keeps the room cooler because = the infrared radiation heats the molecules in the curtain and not the air molecules in the room

c. Keen gardeners use a greenhouse to help their plants grow because = the glass lets through the visible light which the plants need for photosynthesis

d. In high summer, plants often wither and die in a greenhouse because = the abundant infrared radiation passes into the greenhouse rapidly heating the air inside

Type: multiple choice question

Title: Chapter 03 Question 05

5) Given that the work function for an aluminium surface is 5.66 × 10^–19 J, determine what wavelength of radiation will be required to eject an electron from the surface?

a. 652 nm

b. 217 nm

c. 455 nm

d. 351 nm

Type: true-false

Title: Chapter 03 Question 06

6) In Thomas Young’s experiment when he passed light through two closely placed slits, it gave an interference pattern. This evidence suggests that light behaves as a particle. True or false?

a. True

Section reference: 3.2 , Figures 3.7 and 3.8

b. False

7) A line from the Pfund series has the frequency 8.02 × 10¹³ Hz. What value of n₂ generates this line in the spectrum?

Section reference: 3.3

a. 5

b. 6

c. 7

d. 8

Type: fill-in-blank

Title: Chapter 03 Question 08

8) Metals and metal compounds are added to gunpowder to produce the colours given in fireworks. The intense white light produced is by the metals aluminium, magnesium and ____________

Section reference: 3.3

a. titanium

Type: true-false

Title: Chapter 03 Question 09

9) An emission spectrum consists of dark lines on a bright background. True or false?

a. True

Section reference: 3.3 , Figure 3.11

b. False

Section reference: 3.3 , Figure 3.11

Type: multiple choice question

Title: Chapter 03 Question 10

10) An electron is travelling with a wavelength of 246 pm, what is its velocity?

Section reference: 3.4

a. 2.16 × 10⁶ m s^–1

b. 1.96 × 10⁶ m s^–1

c. 2.96 × 10⁶ m s^–1

d. 2.96 × 10⁷ m s^–1

Type: multiple response question

Title: Chapter 03 Question 11

11) As objects such as electrons have wave-like properties, this property leads to uncertainties in which of the following quantities? Please select all that apply.

Section reference: 3.4

a. p (momentum)

b. m (mass)

c. q (position)°

d. h (Planck’s constant)

Type: fill-in-blank

Title: Chapter 03 Question 12

12) Heisenberg stated that due to the wave properties of an electron, it is impossible to know their precise _________ and momentum simultaneously.

Section reference: 3.4

a. Position

Type: true-false

Title: Chapter 03 Question 13

13) It is not possible to define a region that contains the entire wavefunction, True or false?

a. True

Section reference: 3.5 ,

b. False

Section reference: 3.5

Type: matching question

Title: Chapter 03 Question 14

14) Match the type of orbital defined by the quantum numbers given in questions (a) to (d) in the left column, to the answers given in the right column.

Section reference: 3.5

a. n equals 2, l equals 3 = 4d orbital

b. n equals 4, l equals 2 = value of n not allowed

c. n equals 0, l equals 0 = 5f orbital

d. n equals 5, l equals 3 = value of l not allowed for this value of n

Type: multiple choice question

Title: Chapter 03 Question 15

15) The point at which the wavefunction is zero is known as a __ ?

Section reference: 3.5

a. node

b. zeropoint

c. orbital

d. minimum

Type: multiple choice question

Title: Chapter 03 Question 16

16) How many orbitals are defined for the shell where n = 3?

Section reference: 3.5

a. 9

b. 1

c. 4

d. 16

Type: true-false

Title: Chapter 03 Question 17

17) The d_z2 orbital is a different shape to all the other d orbitals because it is really the combination of two orbitals, meaning there are six solutions and not five to the Schrödinger equation for n = 2. True or false?

a. True

Section reference: 3.5, Box 3.5

b. False

Section reference: 3.5, Box 3.5

Type: fill-in-blank

Title: Chapter 03 Question 18

18) The f⁷ configuration has particular stability due to the _______ energy

Section reference: 3.6

a. exchange

Type: multiple response question

Title: Chapter 03 Question 19

19) Which of the following concepts are required to determine the ground state electronic configuration of the nitrogen atom? Please select all that apply.

Section reference: 3.6

a. Aufbau Principle

b. Schrodinger Equation

c. Pauli Exclusion Principle

d. Hund’s Rule

Type: multiple choice question

Title: Chapter 03 Question 20

20) What is the electronic configuration of the nitride, N^3– ion? Is this ion paramagnetic?

Section reference: 3.6

a. N^3– 1s² 2s² 2p⁶ and paramagnetic

b. N^3– 1s² 2s² 2p⁶ and diamagnetic

c. N^3– 1s² 2s² 2p⁵ and paramagnetic

d. N^3– 1s² 2s² 2p⁵ and diamagnetic

Type: true-false

Title: Chapter 03 Question 21

21) The anion of a non metal is smaller than the corresponding neutral species. True or false?

a. True

Section reference: 3.6

b. False

Section reference: 3.6

Type: multiple choice question

Title: Chapter 03 Question 22

22) Use Slater’s rules to determine the relative sizes of N, O and F atoms.

Section reference: 3.6

a. F > O > N

b. N > F > O

c. F < O < N

d. O > F > N

Type: matching question

Title: Chapter 03 Question 23

23) Match the first ionization enthalpy with the appropriate element of the first period.

Section reference: 3.7, Table 3.6

a. 1402 kJ mol^–1 = N

b. 520 kJ mol^–1 = Li

c. 2081 kJ mol^–1 = Ne

d. 1314 kJ mol^–1 = O

Type: fill-in-blank

Title: Chapter 03 Question 24

24) The ionization enthalpy of the group 1 elements _______ down the group?

Section reference: 3.6 (shielding) and 3.7 (ionization enthalpy)

a. decreases

Type: true-false

Title: Chapter 03 Question 25

25) The half life or a radioactive element depends on the number of nuclei at the start. True or false?

a. True

Section reference: 3.8

b. False

Section reference: 3.8