Identify the group 3A element that best fits each of the following descriptions.
(c) Is extremely toxic

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Step 1: The group 3A elements in the periodic table are Boron (B), Aluminum (Al), Gallium (Ga), Indium (In), Thallium (Tl), and Nihonium (Nh).

Step 2: Among these elements, Thallium (Tl) is known to be extremely toxic. It is a heavy metal that can cause serious health problems if ingested or inhaled.

Step 3: Therefore, the group 3A element that best fits the description of being extremely toxic is Thallium (Tl).

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Group 3A Elements

Group 3A elements, also known as Group 13 in the periodic table, include boron, aluminum, gallium, indium, and thallium. These elements exhibit a range of properties, from the metalloid nature of boron to the metallic characteristics of aluminum and thallium. Understanding their position in the periodic table helps in predicting their chemical behavior and toxicity.

Toxicity of Elements

Toxicity refers to the degree to which a substance can harm living organisms. In the context of Group 3A elements, certain elements like thallium and arsenic (though arsenic is technically in Group 5) are known for their high toxicity. Recognizing the toxicological profiles of these elements is crucial for safety and environmental considerations.

Chemical Properties and Applications

The chemical properties of Group 3A elements vary significantly, influencing their applications and safety. For instance, thallium is used in specialized applications but is highly toxic, while aluminum is widely used in construction and packaging due to its non-toxic nature. Understanding these properties helps in identifying which element fits specific descriptions, such as toxicity.

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