Using the VSEPR Model,the Molecular Geometry of the Central Atom

question 37

Multiple Choice

Using the VSEPR model,the molecular geometry of the central atom in CH₄ is ________.

• A)linear
• B)trigonal planar
• C)tetrahedral
• D)bent
• E)trigonal pyramidal

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Definitions:

Anagenesis

Refers to wholesale transformation of a lineage from one form to another. In macroevolutionary studies, anagenesis is considered to be an alternative to lineage splitting or speciation.

Lineage

Lineage refers to a chain of ancestors and their descendants. A lineage may be the successive generations of organisms in a single population, the members of an entire species during an interval of geological time, or a group of related species descending from a common ancestor.

Evolutionary Faunas

Groups of animals that share a similar ecological role and have a continuous evolutionary history across geological times.

Cambrian Fauna

Diverse groups of marine animals that emerged during the Cambrian Period, marked by a rapid increase in complexity and variety of life forms.