Scelta multipla
Which of the following statements correctly describes the first 36 elements of the periodic table?
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2. Atoms & Elements
Periodic Table: Representative Elements & Transition Metals
Scelta multipla
Which element is the only metalloid in period 3 of the periodic table?
A
Si
B
P
C
None; there are no metalloids in period 3
D
Al
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Recall that metalloids are elements with properties intermediate between metals and nonmetals, often found along the 'stair-step' line on the periodic table.
Identify the elements in period 3: Na, Mg, Al, Si, P, S, Cl, and Ar.
Check which of these elements are classified as metalloids. Typically, metalloids include elements like B, Si, Ge, As, Sb, Te, and Po, but not all periods have metalloids.
Note that in period 3, silicon (Si) is commonly recognized as a metalloid due to its semiconducting properties and position on the periodic table.
Therefore, conclude that Si is the only metalloid in period 3.
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