Which one of the following is not a main group element?
A)Rb
B)Ba
C)Fe
D)Ge

Name: Which one of the following is not a main group element? A)Rb B)Ba C)Fe D)Ge
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Question

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Rb (Rubidium), Ba (Barium), and Ge (Germanium) are all main group elements located in Groups 1, 2, and 14 of the periodic table, respectively. Fe (Iron) is a transition metal element located in the d block of the periodic table and is not considered a main group element.

Which One of the Following Is Not a Main Group