Chromium and Manganese Are Among the Transition Elements That Form

question 77

Multiple Choice

Chromium and manganese are among the transition elements that form several different oxides. Which of the following statements characterize these oxides?

• A) As the oxidation number on the metal increases, the valence-state electronegativity increases and the oxides change from acidic to basic.
• B) As the oxidation number on the metal increases, the valence-state electronegativity increases and the oxides change from basic to acidic.
• C) As the oxidation number on the metal increases, the valence-state electronegativity decreases and the oxides change from acidic to basic.
• D) As the oxidation number on the metal increases, the valence-state electronegativity decreases and the oxides change from basic to acidic.
• E) None of these choices is correct.

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Definitions:

Carbohydrates

Biomolecules consisting of carbon, hydrogen, and oxygen atoms, which are major sources of energy in the diet and are found in foods like grains, fruits, and vegetables.

Aerobic Respiration

A cellular process in which oxygen is used to metabolize glucose, producing ATP, the primary energy currency in cells, along with carbon dioxide and water as byproducts.

Anaerobic Respiration

The process of generating energy in cells without oxygen, typically producing lactic acid or ethanol.

ATPs

Adenosine triphosphate, a molecule that stores and transports chemical energy within cells for metabolic processes.