Multiple Choice
In the modern periodic table, how are atoms (elements) arranged?
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4. Atoms and Elements
Periodic Table: Classifications
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Which element is classified as a metalloid on the periodic table?
A
Silicon (Si)
B
Neon (Ne)
C
Sodium (Na)
D
Bromine (Br)
Verified step by step guidance1
Understand the classification of elements on the periodic table: metals, nonmetals, and metalloids. Metalloids have properties intermediate between metals and nonmetals.
Recall that metalloids are typically found along the 'stair-step' line that divides metals and nonmetals on the periodic table.
Identify the elements given in the problem: Neon (Ne), Sodium (Na), Bromine (Br), and Silicon (Si).
Check the position of each element on the periodic table: Neon is a noble gas (nonmetal), Sodium is an alkali metal, Bromine is a halogen (nonmetal), and Silicon is located along the metalloid line.
Conclude that Silicon (Si) is classified as a metalloid because it exhibits properties of both metals and nonmetals and is positioned on the metalloid line.
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