What is the name for the group of elements indicated by the shaded portion of the periodic table? 
Definitions:
Test Marketing
The process of introducing a new product to a limited market to gather feedback and evaluate its performance before a full-scale launch.
Geographically Limited
Refers to products or services whose availability or relevance is restricted to a specific geographical area.
Final Form
The ultimate or fully developed version or state of someone or something.
New and Improved
A marketing term indicating that a product has been updated or enhanced from its previous version.
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