Free Printable Electronic Structure of the Atom

1.

What are the possible values of the magnetic quantum number (m_l) for an electron in a 3p orbital?

a)

-3, -2, -1, 0, +1, +2, +3

b)

-2, -1, 0, +1, +2

c)

-1, 0, +1

d)

0

2.

The probability of finding the electron in a certain space around the nucleus is known as:

a)

Schrödinger's equation

b)

Wavefunction

c)

Orbital

d)

Quantum numbers

3.

The correct electronic configuration of Cr (Z=24) is

a)

[Ar] 3d⁵ 4s ¹

b)

[Ar] 3d⁴ 4s 2

c)

[Ar] 3d⁹ 4s²

d)

[Ar] 3d¹⁰ 4s ¹

4.

The sub-shell with n=6, l=2 can accomodate a maximum of

a)

10 electrons

b)

12 electrons

c)

36 electrons

d)

72 electrons

5.

The quantum of light is

a)

photon

b)

neutron

c)

electron

d)

proton

6.

For principal quantum number n=4, the total number of orbitals having l=3 is

a)

3

b)

5

c)

7

d)

9

7.

Which of the following is not possible?

a)

n=3, l=2, m=0

b)

n=1, l=0, m=0

c)

n=3, l=3, m=2

d)

n=4, l=3, m=-3

8.

Maximum number of electrons in each orbital is?

a)

1

b)

2

c)

3

d)

4

9.

The second electron shell (n=2) can hold how many electrons?

a)

8

b)

2

c)

6

d)

4

10.

The first electron shell (n=1) can hold how many electrons?

a)

8

b)

2

c)

6

d)

4

11.

What shell represents the lowest energy level of an atom?

a)

The 1st shell

b)

The 3rd shell

c)

The 2nd shell

d)

The 4th shell

12.

The noble gases are ____ as a result of having a full outer shell.

a)

Volatile

b)

Reactive

c)

Stable

d)

Electronegative

13.

What are the orbitals present in the fifth principal energy level?

a)

s orbital

b)

s,p orbital

c)

s,p,d orbitals

d)

s, p, d, and f orbitals

14.

Which orbital designation has the highest energy?

a)

2s

b)

2p

c)

3d

d)

4s

15.

One of the uses of the emission line spectrum of a specific substance is to:

a)

Identify unknown substances

b)

Obtain the electromagnetic spectrum

c)

Know the energy level of the electrons

d)

Know the position of the electrons

16.

The probability of finding the electron in a certain space around the nucleus is known as:

a)

Schrödinger's equation

b)

Wavefunction

c)

Orbital

d)

Quantum numbers

17.

An excited electron residing in the energy level n = 4 drops to n = 1. What is the wavelenght of the emission if the frequency is 3.09 x 10¹⁵ Hz? (c = 3 x 10⁸ ms^-1)

a)

4.69 x 10^-6 m

b)

2.91 x 10^-7 m

c)

3.88 x 10^-7 m

d)

9.71 x 10^-8 m

18.

What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

a)

Zinc

b)

Copper

c)

Nickel

d)

Germanium

19.

Which electron configuration belongs to Chlorine (Cl)?

a)

1s²2s²2p⁶3s²3p⁵

b)

1s²2s²2p⁶3s²3p⁶

c)

1s²2s²2p⁶3s²3p⁷

20.

How many electrons can the d sublevel hold?

a)

14

b)

10

c)

2

d)

6

21.

What is incorrect about this orbital diagram?

a)

Both arrows in the 2p box should be pointing up

b)

There is nothing incorrect with this diagram

c)

In the 2p box there should only be 1 electron in the first 2p box and one in the 2nd 2p box pointing in the same direction.

d)

All the arrows should be pointing up.

22.

What's a valence electron?

a)

electrons in the second energy level

b)

electrons in the outermost energy level

c)

the atomic number

d)

electrons in the first level

23.

What is the noble gas configuration for beryllium?

a)

[He]1s²

b)

[He]2s²

c)

[Li]2s¹

d)

[Li]2s²

24.

What is the noble gas configuration for Neon?

a)

[Ne]

b)

[He]2s²2p⁶

c)

[F]2p¹

d)

[Ne]2s²1p⁶

25.

What is the noble gas configuration for Tin?

a)

[Xe]5s²4d¹⁰5p²

b)

[Xe]5s²4d¹⁰5p²

c)

[Kr]5p²

d)

[Kr]5s²4d¹⁰5p²

26.

This could be the dot diagram of

a)

Mg

b)

Cl

c)

C

d)

O

27.

How many electrons should Flourine have around its Lewis dot model?

a)

5

b)

6

c)

7

d)

8

28.

How many electrons should Beryllium have around its Lewis dot model?

a)

1

b)

2

c)

3

d)

4

29.

Which element is depicted from this orbital diagram

a)

Fluorine

b)

Neon

c)

Chlorine

d)

Argon

30.

Which is associated with more energy?

a)

2p

b)

2s

c)

3p

d)

1s

31.

Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?

a)

Hund’s Rule

b)

Aufbau Principle

c)

Pauli Exclusion Principle

32.

This "rule" of Quantum Chemistry states that it is impossible to know both the position and velocity of an electron at the same time.

a)

Hund's Rule

b)

Heisenberg Uncertainty Principle

c)

Aufbau Principle

d)

Pauli Exclusion Principle

33.

Which of the following statements is true about the 3s and the 4s sublevels?

a)

These sublevels have the same energy

b)

These sublevels are the same distance from the nucleus

c)

These sublevels hold different amounts of electrons

d)

These sublevels have the same shape

34.

This "rule" of Quantum Chemistry states that no 2 electrons in an atom can be in the exact same state...each electron in an atom can be described by a unique set of quantum numbers.

a)

Hund's Rule

b)

Heisenberg Uncertainty Principle

c)

Aufbau Principle

d)

Pauli Exclusion Principle

35.

What is the Noble Gas electron configuration for silver?

a)

1s² 2s² 2p⁶3s² 3p⁶ 4s² 3d¹⁰4p⁶ 5s² 4d⁹

b)

[Kr] 5s¹ 4d¹⁰

c)

[Kr] 5s² 4d⁹

d)

[Ag]

36.

What is the speed of light in a vacuum?

a)

$3\times10^8$ m/s

b)

$3\times10^{-8}$ m/s

c)

$6.626\times10^{34}$ J s

d)

$6.626\times10^{-34}$ J s

37.

What is the value of Planck's constant?

a)

$3\times10^8$ m/s

b)

$3\times10^{-8}$ m/s

c)

$6.63\times10^{34}$ J s

d)

$6.63\times10^{-34}$ J s

38.

What is the frequency of green light that has a wavelength of 500 nm?

a)

$6\times10^{-3}$ Hz

b)

$6\times10^5$ Hz

c)

$6\times10^{14}$ Hz

d)

$6\times10^{-16}$ HZ

39.

What is the frequency of red light that has a wavelength of $7.5\ \times10^{-7}$ m?

a)

$4\times10^{-14}$ Hz

b)

$4\times10^{14}$ Hz

c)

$2.5\times10^{14}$ Hz

d)

$2.5\times10^{-14}$ HZ

40.

What is the wavelength of a microwave transmission at 1,575.42 MHz?

a)

$1.9\times10^{-14}$ m

b)

$1.9\times10^{-9}$ m

c)

$0.19$ m

d)

$1900$ m

41.

Calculate the energy of a photon of light with a wavelength of $4.867\times10^{-7}$ m.

a)

$4.08\times10^{19}$ J

b)

$4.08\times10^{-19}$ J

c)

$4.08\times10^{49}$ J

d)

$4.08\times10^{-49}$ J

Electronic Structure of the Atom

Total questions: 41

Worksheet time: 32mins

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