Multiple Choice
Based on periodic trends, which element has the highest electronegativity on the Pauling scale?
9. Electrons in Atoms and the Periodic Table
Periodic Trend: Metallic Character
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Which of the following elements is a metalloid?
A
Sodium (Na)
B
Neon (Ne)
C
Chlorine (Cl)
D
Silicon (Si)
Verified step by step guidance1
Understand what a metalloid is: Metalloids are elements that have properties intermediate between metals and nonmetals. They often exhibit mixed characteristics such as semiconducting behavior.
Review the list of elements given: Sodium (Na), Neon (Ne), Chlorine (Cl), and Silicon (Si).
Recall the general classification of these elements: Sodium is an alkali metal, Neon is a noble gas (nonmetal), Chlorine is a halogen (nonmetal), and Silicon is known to have metalloid properties.
Identify the element with metalloid characteristics: Silicon (Si) is located along the 'stair-step' line on the periodic table that separates metals and nonmetals, which is typical for metalloids.
Conclude that Silicon (Si) is the metalloid among the options because it exhibits both metallic and nonmetallic properties.
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