CPC 5.2 Classifying Elements

Multiple Choice

Where are valence electrons located in an atom?

• In the nucleus

• In the innermost orbital

• In the outermost orbital

• In the middle orbital

Multiple Choice

Valence electrons are crucial for determining what aspect of an atom?

• Its atomic number

• Its chemical properties

• Its mass number

• Its neutron count

Multiple Choice

What determines the chemical properties of an element?

• Atomic mass

• Electron configuration

• Number of protons

• Neutron count

Multiple Choice

How many valence electrons do all Group 1 elements have?

• Two

• Three

• One

• Four

Multiple Select

What is the electron configuration of lithium?

(Choose 2)

• 1s²

• 1s²2s¹

• 1s¹

• 1s²2p⁶

• [He]2s¹

Multiple Choice

Which element has the electron configuration [Ne]3s¹?

• Hydrogen

• Lithium

• Sodium

• Potassium

Multiple Select

What is the electron configuration of potassium, K?

• 1s²2s²2p⁶3s²3p⁶4s¹

• 1s²2s²2p⁶3s²

• [Ne]3s¹

• 1s²2s²2p⁶3s²3p⁶

• [Ar]4s¹

Multiple Choice

How many valence electrons do Group 2 elements have?

• One

• Two

• Three

• Four

Multiple Choice

For elements in groups 13–18, how is the number of valence electrons determined?

• It is equal to their group number.

• It is ten more than their group number.

• It is ten less than their group number.

• It is twice their group number.

Multiple Choice

Which of the following elements is in Group 2?

Multiple Choice

What is the group number for elements with eight valence electrons?

• Group 10

• Group 16

• Group 18

• Group 20

Multiple Choice

What does the energy level of an element's valence electrons indicate?

• The atomic mass of the element

• The period on the periodic table

• The number of protons

• The element's density

Multiple Choice

Which element has the electron configuration 1s²?

• Neon

• Argon

• Helium

• Krypton

Multiple Choice

What is the principal energy level for neon?

• n = 1

• n = 2

• n = 3

• n = 4

Multiple Choice

Which element has the electron configuration [Ar]4s²3d¹⁰4p⁶?

• Helium

• Neon

• Argon

• Krypton

Multiple Choice

In which period is argon found based on its electron configuration?

[Ne]3s²3p⁶

• Period 1

• Period 2

• Period 3

• Period 4

Multiple Choice

How many blocks is the periodic table divided into?

(by electron configuration)

• Two

• Three

• Four

• Five

Match

Which orbitals do the colored blocks in this periodic table correspond to?

• d orbital

• s orbital

• f orbital

• p orbital

blue

yellow

green

purple

• blue

• yellow

• green

• purple

Multiple Select

Select all blocks that are filled or partially filled with valence electrons.

• s

• p

• d

• f

• none

Multiple Choice

Which groups do the s-block elements consist of?

• Groups 1 and 2

• Groups 3 and 4

• Groups 5 and 6

• Groups 7 and 8

Multiple Choice

What is true about Group 1 elements in terms of their s orbital?

• They have a partially filled s orbital with one electron.

• They have a completely filled s orbital with two electrons.

• They have no electrons in the s orbital.

• They have a partially filled p orbital with one electron.

Multiple Choice

Which groups make up the p-block elements?

• Groups 13-18

• Groups 1-2

• Groups 3-12

• Groups 19-24

Multiple Choice

In which group are both the s and p orbitals completely filled?

• Group 18

• Group 1

• Group 2

• Group 13

Multiple Choice

Which block contains the transition metals?

• s-block

• p-block

• d-block

• f-block

Multiple Choice

How many electrons can the five d orbitals hold?

• 5 electrons

• 10 electrons

• 15 electrons

• 20 electrons

Multiple Choice

Which block contains the inner transition metals?

• s-block

• p-block

• d-block

• f-block

Multiple Choice

What do f-block elements have in their outermost orbitals?

• Filled or partially filled

  p and d orbitals

• Filled or partially filled

  s and f orbitals

• Filled or partially filled

  d and f orbitals

• Filled or partially filled

  f orbitals

Multiple Choice

How many electrons do the seven f orbitals hold?

• 7 electrons

• 14 electrons

• 21 electrons

• 28 electrons

Multiple Choice

How many groups do the inner transition metals span?

• 7 groups

• 10 groups

• 14 groups

• 18 groups

Drag and Drop

Determine the group, period and block of an element with the configuration [Kr]5s².

​

Placeholder

Block

Group ​

Placeholder

Period ​

Placeholder

Drag these tiles and drop them in the correct blank above

2

s

5

f

3

12

15

10

p

d

Multiple Choice

What consists of elements with one valence electron?

• Group 1

• Period 1

• Group 7

• Period 7

Multiple Choice

For elements in groups 13-18, the number of valence electrons is ______.

• equal to their group number

• ten more than their group number

• ten less than their group number

• unrelated to their group number

Multiple Choice

In which block is group 17 on the periodic table?

• the s-block

• the p-block

• the d-block

• the f-block

Multiple Choice

Which block on the periodic table has the most elements?

• the s-block

• the p-block

• the d-block

• the f-block