Certain Period 2 Elements Exhibit Behaviors Similar to Period 3

question 77

Multiple Choice

Certain Period 2 elements exhibit behaviors similar to Period 3 elements immediately below and to the right. One of these interesting diagonal relationships occurs between lithium and magnesium. Which of the following is one of their similarities?

• A)They both form insoluble carbonate salts.
• B)Both elements are important in treating manic-depression.
• C)Their first ionization energies are almost equal.
• D)Their densities are very similar.
• E)They both form organic compounds with polar covalent bonds from the metal to hydrocarbon group.

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Definitions:

Row Variable

A variable that constitutes the basis for organizing data in rows in a table or matrix, often used in cross-tabulation.

Column Variable

A variable represented in one of the vertical columns of a data table, often used in multivariate analysis and cross-tabulations.

Critical Value

A point on the scale of a statistical distribution that corresponds to a specified level of significance, used in hypothesis testing to determine whether to reject the null hypothesis.

Alpha

The significance level in statistical tests, denoting the probability threshold at which the null hypothesis is rejected in favor of the alternative hypothesis.