Ga As is a/an:

Options

A. elemental semiconductor
B. alloy semiconductor
C. bad conductor
D. metallic semiconductor

Explanation

To determine what GaAs (Gallium Arsenide) is, we can analyze the components and properties of this compound step by step.

### Step 1: Identify the Components
- Ga stands for Gallium.
- As stands for Arsenic.

**Hint:** Remember that the letters in the chemical formula often represent the elements involved.

### Step 2: Classify the Elements
- Gallium (Ga) is a semiconductor material.
- Arsenic (As) is typically used as a dopant in semiconductor technology.

**Hint:** Consider the properties of each element when determining the overall classification.

### Step 3: Understand the Combination
- When Gallium and Arsenic combine, they form Gallium Arsenide (GaAs).
- This compound exhibits semiconductor properties due to the nature of Gallium and the influence of Arsenic.

**Hint:** Think about how the combination of elements can change their properties.

### Step 4: Analyze the Properties of GaAs
- GaAs is known for its high electron mobility, which allows it to perform well in high-frequency applications.
- This high electron mobility is a key characteristic that makes GaAs suitable for use in transistors and other electronic devices.

**Hint:** High electron mobility is an important factor in determining the effectiveness of a semiconductor in electronic applications.

### Step 5: Determine the Classification
- Given that GaAs is formed from a combination of Gallium (a semiconductor) and Arsenic (which can act as an impurity or dopant), GaAs is classified as an alloy semiconductor.

**Hint:** Consider the definitions of different types of semiconductors and how alloys fit into those definitions.

### Conclusion
Based on the analysis, GaAs is classified as an **alloy semiconductor**.

### Final Answer
GaAs is an alloy semiconductor.

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