key term - D-block elements

Definition

D-block elements are those elements in groups 3-12 of the periodic table, characterized by having their outermost electrons in a d orbital. They include transition metals known for their ability to form various oxidation states and complex compounds.

5 Must Know Facts For Your Next Test

1. D-block elements exhibit variable oxidation states due to the involvement of d-orbital electrons.
2. These elements typically form colored compounds because of d-d electron transitions.
3. They are often good conductors of electricity and have high melting and boiling points.
4. Many d-block elements and their compounds act as catalysts in chemical reactions.
5. They can form complex ions with ligands, which are essential in coordination chemistry.

Review Questions

Related terms

Transition Metals:

A subset of d-block elements known for their ability to form various oxidation states and colored compounds.

Oxidation States:

The charge that an atom would have if all bonds were ionic; important for understanding the reactivity of transition metals.

Coordination Compound: A compound consisting typically of a central metal atom or ion bonded to surrounding molecules or anions called ligands.