Consider the Element with the Electron Configuration: [Rn]7s25f7

question 75

Multiple Choice

Consider the element with the electron configuration: [Rn]7s25f7. How would you classify this element?

• A) a representative element
• B) a transition metal
• C) a nonmetal
• D) an actinide element
• E) a noble gas

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Definitions:

Derived Homologies

Features shared by descendants of a common ancestor that have undergone evolution to serve new functions.

Synapomorphies

Shared derived characteristics or traits that are used to establish evolutionary relationships among species or groups.

Common Ancestor

The most recent individual from which all organisms in a group are directly descended.

Phylogenetic Systematics

A method of classifying organisms based on their evolutionary relationships, utilizing genetic, morphological, and other data to infer a "family tree" of life.