In the Cation [CrCl₂(H₂O)₄]⁺, the Oxidation State of Chromium and Its

question 97

Multiple Choice

In the cation [CrCl₂(H₂O) ₄]⁺, the oxidation state of chromium and its coordination number, respectively, are ________.

• A) -3 and two
• B) +3 and six
• C) 0 and four
• D) +2 and six
• E) -4 and six

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Definitions:

Tropomyosin

A muscle protein involved in regulation of contraction.

Sarcomere

A segment of a striated muscle cell located between adjacent Z lines that serves as a unit of contraction.

Exoskeleton

An exoskeleton is a rigid external covering for the body in some invertebrate animals, especially arthropods, providing protection and support for the organism.

Gastrovascular Cavity

A gastrovascular cavity is a single internal cavity in certain simple animals that acts both in digestion and the distribution of nutrients.