In this question, we are tasked with identifying which of the given elements are metalloids. Let's first understand the characteristics and classification of metalloids in the periodic table.
Definition of Metalloids: Metalloids are elements that have properties intermediate between those of metals and non-metals. They are typically semiconductors, meaning they can conduct electricity better than non-metals but not as well as metals. This property is particularly useful in electronic devices.
Commonly Recognized Metalloids: Typically, the elements recognized as metalloids include Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Tellurium (Te), and sometimes Selenium (Se), depending on the classification.
Now, let's analyze the options provided:
Bi (Bismuth): Bismuth is a post-transition metal and is not classified as a metalloid.
Sb (Antimony): Antimony is a well-known metalloid. It exhibits properties that are intermediate between metals and non-metals. Thus, this is a correct choice.
P (Phosphorus): Phosphorus is a non-metal, not considered a metalloid.
Se (Selenium): Selenium is sometimes considered a metalloid, particularly in some scientific classifications, due to its properties, which include semiconductor behavior. Thus, this is also a correct choice.
Conclusion: Based on the above analysis, the elements given in the options that are classified as metalloids are:
Correct Answer: Antimony (Sb) and Selenium (Se).
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