Chromium and Manganese Are Among the Transition Elements That Form

question 11

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 the above statements is correct.

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Definitions:

Sample Mean

The average value of a set of measurements or quantities collected from a sample.

Population Mean

The average value of a population parameter, which is the sum of all the values in the population divided by the number of values.

Sampling Error

Refers to the error caused by observing a sample instead of the whole population.

Sampling Error

The discrepancy between the statistical measures of a sample and the actual parameters of the whole population.