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:

Opportunity Cost

The expense of not choosing the second-best option while making a choice.

Machinery

Mechanical devices or assemblies, often powered by electricity or engines, that perform specific tasks, commonly used in industries for production processes.

Petroleum

A natural, flammable liquid found in the Earth's formations, composed of a complex mixture of hydrocarbons and used primarily as fuel.

Opportunity Cost

The value of the best alternative forgone when a decision is made to pursue a particular course of action.