The Atomic Radii of the Period 6 D-Metals Are

question 78

Multiple Choice

The atomic radii of the Period 6 d-metals are

• A) smaller than expected, and about the same as the Period 5 d-metals.
• B) about the same as the lanthanides.
• C) larger than the atomic radii of the Period 5 d-metals.
• D) about the same as the Period 4 d-metals.
• E) large because of the lanthanide contraction.

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Definitions:

Binding

The process of chemically linking two or more molecules together, often referring to the interaction between a protein and a ligand.

Substrate

The underlying substance or layer on which an organism lives, grows, or is attached, or a material upon which an enzyme acts.

Isomerases

Enzymes that catalyze the rearrangement of atoms within a molecule, often crucial in metabolic pathways.

Isomeric Form

Variants of a molecule that have the same molecular formula but differ in the arrangement of atoms within the molecule or in their spatial orientation.