Answer :
Final answer:
Selenium (Se) is classified as a nonmetal based on its position in the periodic table, despite having some similar properties to semimetals due to its proximity to the dividing line between metals and nonmetals. The Correct option is 2
Explanation:
Based on its position in the periodic table, selenium (Se) should be classified as a nonmetal. Selenium is found in period 4 and group 16 of the periodic table, lying above and to the right of the diagonal line that demarcates metals from nonmetals. Although it is close to this metal-nonmetal dividing line, and shares some characteristics with semimetals, its most stable form and general properties align more closely with those of nonmetals. Selenium has several practical applications due to its photoconductive and semiconductor properties, making it useful in devices like rectifiers and laser printer drums.
