The Question is from neet-chemistry classification-of-elements-and-periodicity-in-prop types-of-elements, and it was created by the author Mr. S M HUSSAIN

Question

Which of the following is NOT a metalloid?

Mr. S M HUSSAIN · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
 **Primary Concept**: Metalloids and their properties
 **Related Topics**: Periodic table, chemical properties of elements
 **Prerequisites**: Basic understanding of the periodic table and the properties of metals, nonmetals, and metalloids.
## SOLUTION PATHWAY
**Given Information**:
The question asks to identify which element from the given options is NOT a metalloid.
**Method & Steps**:
1. Identify the metalloids among the options.
  Reasoning: Metalloids possess properties intermediate between metals and nonmetals. They exhibit both metallic and nonmetallic characteristics.
  Formula/Rule: There's no specific formula, but understanding the general properties of metalloids is crucial.
2. Determine which element does not fit the description of a metalloid.
  Working: Let's analyze each option:
  - Silicon (Si): A metalloid, showing semiconductor properties.
  - Germanium (Ge): A metalloid, also a semiconductor.
  - Arsenic (As): A metalloid, exhibiting both metallic and nonmetallic characteristics.
  - Aluminum (Al): A metal, known for its high electrical and thermal conductivity, malleability, and ductility.
3. Conclude the answer.
  Result: Aluminum is not a metalloid; it's a metal.
  Verification: The properties of Aluminum clearly distinguish it from metalloids.
## OPTION ANALYSIS
A ✓: Silicon is a metalloid.
B :x: Germanium is a metalloid.
C :x: Arsenic is a metalloid.
D :x: Aluminum is a metal, not a metalloid.
## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing metalloids with metals or nonmetals: Carefully study the properties that differentiate metalloids from metals and nonmetals.
  2.Memorizing the list without understanding: Focus on understanding the underlying properties that define a metalloid.
 **Quick Tips**:
  1.Remember the common metalloids: B, Si, Ge, As, Sb, Te, and Po (Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium, and Polonium).
  2.Relate their properties to their position in the periodic table: Metalloids are typically found along the stair-step line separating metals and nonmetals.

Mr. S M HUSSAIN · Answer

Silicon

Mr. S M HUSSAIN · Answer

Germanium

Mr. S M HUSSAIN · Answer

Arsenic

Mr. S M HUSSAIN · Answer

The correct Option is "Aluminum"

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