F Block Element

Question 1

What does the f-block consist of?

Answer 1

The f-block consists of the lanthanoids and actinoids series

The lanthanoids include the fourteen elements following lanthanum, and the actinoids include the fourteen elements following actinium.

Question 2

Which element is usually included in discussions of the lanthanoids?

Answer 2

Lanthanum

The general symbol used for lanthanoids is Ln.

Question 3

What series is included in discussions of the actinoids?

Answer 3

Actinium

Actinium is included alongside the fourteen actinoid elements.

Question 4

How do lanthanoids resemble each other compared to transition elements?

Answer 4

Lanthanoids resemble one another more closely than do the members of ordinary transition elements

They have only one stable oxidation state.

Question 5

What type of oxidation states do actinoids exhibit?

Answer 5

A wide range of oxidation states

This range contributes to the complexity of actinoid chemistry.

Question 6

What complicates the study of actinoids?

Answer 6

Radioactivity and a wide range of oxidation states

The radioactivity of actinoids creates special problems in their study.

Question 7

Fill in the blank: The general symbol for lanthanoids is _______.

Answer 7

Ln

Question 8

True or False: Lanthanoids have multiple stable oxidation states.

Answer 8

False

Lanthanoids have only one stable oxidation state.

Question 9

What is the primary difference in the chemistry between lanthanoids and actinoids?

Answer 9

Lanthanoids have simple chemistry, while actinoids have complicated chemistry due to their oxidation states and radioactivity.