Free Printable Electron Configuration Basics

1.

What is the maximum number of electrons that can occupy the s sublevel in any energy level?

a)

2

b)

6

c)

10

d)

14

2.

Which orbital notation correctly represents the p sublevel when it is fully occupied?

a)

$\uparrow\downarrow$

b)

$\uparrow\downarrow, \uparrow\downarrow, \uparrow\downarrow$

c)

$\uparrow, \uparrow, \uparrow$

d)

$\uparrow\downarrow, \uparrow, \uparrow$

3.

What is the shape of the p orbital?

a)

Spherical

b)

Dumbbell

c)

Cloverleaf

d)

Linear

4.

How many electrons can a single orbital hold?

a)

1

b)

2

c)

4

d)

8

5.

Which of the following is the correct electron configuration notation for an oxygen atom (Atomic number 8)?

a)

$1s^2 2s^2 2p^4$

b)

$1s^2 2s^2 2p^6$

c)

$1s^2 2s^2 2p^2$

d)

$1s^2 2s^3 2p^3$

6.

What term describes the arrangement of electrons in an atom?

a)

Electron configuration

b)

Orbital diagram

c)

Valence structure

d)

Quantum setup

7.

Which sublevel begins to fill after the 3p sublevel in the order of increasing energy?

a)

4s

b)

3d

c)

4p

d)

3s

8.

What is the maximum number of electrons that the d sublevel can hold?

a)

2

b)

6

c)

10

d)

14

9.

Which of the following elements has an electron configuration that ends in $3p^5$ ?

a)

Chlorine

b)

Sulfur

c)

Phosphorus

d)

Argon

10.

What is the principle quantum number if an electron is in the 4th energy level?

a)

2

b)

3

c)

4

d)

5

11.

Which of the following is a possible set of quantum numbers for an electron in a 3p orbital?

a)

n=3, l=1, m_l=0, m_s=+1/2

b)

n=3, l=2, m_l=1, m_s=-1/2

c)

n=2, l=1, m_l=0, m_s=+1/2

d)

n=3, l=0, m_l=0, m_s=-1/2

12.

What does the "spin" of an electron describe?

a)

The direction it orbits the nucleus

b)

Its magnetic orientation

c)

The shape of its orbital

d)

Its ability to absorb energy

13.

In which sublevel do electrons start filling after the $1s$ sublevel?

a)

$2s$

b)

$2p$

c)

$3s$

d)

$3p$

14.

How many p orbitals are there in a p sublevel?

a)

1

b)

2

c)

3

d)

5

15.

What is the maximum number of electrons that can occupy a single energy level when n=3?

a)

8

b)

10

c)

18

d)

32

16.

Which of the following is the correct order of filling the orbitals according to their increasing energy?

a)

$1s, 2s, 2p, 3s, 3p, 4s, 3d$

b)

$1s, 2s, 3s, 2p, 3p, 4s, 3d$

c)

$1s, 2p, 2s, 3s, 3p, 4s, 3d$

d)

$1s, 2s, 2p, 3s, 4s, 3p, 3d$

Electron Configuration Basics

Total questions: 16

Worksheet time: 8mins

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