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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