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Understanding Electron Configurations

Total questions: 12

Worksheet time: 6mins

Name
Class
Date
1.

What is the electron configuration notation for oxygen?

a)

1s² 2s² 2p⁴

b)

1s² 2s² 2p³

c)

1s² 2s² 2p²

d)

1s² 2s² 2p⁵

2.

Describe the shape of an s orbital.

a)

The shape of an s orbital is flat and circular.

b)

The shape of an s orbital is spherical.

c)

The shape of an s orbital is triangular.

d)

The shape of an s orbital is dumbbell-shaped.

3.

How many valence electrons does carbon have?

a)

2

b)

6

c)

8

d)

4

4.

What is the maximum number of electrons in a p orbital?

a)

2

b)

8

c)

4

d)

6

5.

Explain the significance of valence electrons in bonding.

a)

Valence electrons only affect physical properties, not bonding.

b)

Valence electrons are irrelevant in chemical reactions.

c)

Valence electrons are significant in bonding because they determine how atoms interact and bond with each other, influencing the formation and type of chemical bonds.

d)

All electrons in an atom participate equally in bonding.

6.

What is the electron configuration for sodium?

a)

1s² 2s² 2p⁶ 3s¹

b)

1s² 2s² 2p⁶ 3s²

c)

1s² 2s² 2p⁶ 3p¹

d)

1s² 2s² 3p⁶ 3s¹

7.

Identify the type of orbital that can hold a maximum of 10 electrons.

a)

f-orbital

b)

d-orbital

c)

s-orbital

d)

p-orbital

8.

How do you determine the number of unpaired electrons in an atom?

a)

Determine the atom's mass number.

b)

Identify the atom's atomic number.

c)

Count the unpaired electrons in the atom's electron configuration.

d)

Count the total number of electrons in the atom.

9.

What is the electron configuration for a transition metal?

a)

[noble gas] ns^1 (n-1)d^x

b)

[noble gas] ns^2 (n-1)d^10

c)

[noble gas] ns^2 (n-1)d^x

d)

[noble gas] ns^2 (n-1)d^5

10.

Describe the shape of a d orbital.

a)

A d orbital has a single lobe extending in one direction.

b)

The shape of a d orbital is generally described as having four lobes in a cloverleaf pattern, with one orbital (dz2) featuring a ring.

c)

The shape of a d orbital is spherical with no lobes.

d)

The d orbital is shaped like a straight line with two ends.

11.

How do valence electrons influence the chemical properties of an element?

a)

Valence electrons determine an element's reactivity and bonding behavior, influencing its chemical properties.

b)

Valence electrons are irrelevant to chemical reactions.

c)

Valence electrons only determine the color of an element.

d)

Valence electrons have no effect on an element's properties.

12.

What is the electron configuration for chlorine?

a)

1s² 2s² 2p⁶ 3s² 3p⁵

b)

1s² 2s² 2p⁶ 3s² 3p⁴

c)

1s² 2s² 2p⁶ 3s² 3p⁶

d)

1s² 2s² 2p⁶ 3s² 3p³