Multiple Choice
Which of the following elements is classified as a metalloid?
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2. Atoms & Elements
Periodic Table: Classifications
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Which of the following sets of elements contains a metalloid?
A
O, F, Ne
B
K, Ca, Sc
C
Si, P, S
D
Na, Mg, Al
Verified step by step guidance1
Step 1: Understand what a metalloid is. Metalloids are elements that have properties intermediate between metals and nonmetals. They are typically found along the 'stair-step' line on the periodic table, separating metals and nonmetals.
Step 2: Review each set of elements and identify their categories (metal, nonmetal, or metalloid). For example, O (oxygen), F (fluorine), and Ne (neon) are all nonmetals.
Step 3: Check the second set: K (potassium), Ca (calcium), and Sc (scandium) are all metals.
Step 4: Examine the third set: Si (silicon), P (phosphorus), and S (sulfur). Silicon (Si) is a metalloid, while phosphorus (P) and sulfur (S) are nonmetals.
Step 5: Look at the fourth set: Na (sodium), Mg (magnesium), and Al (aluminum) are all metals.
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