The metalloids include the elements

Options

A. boron, silicon
B. arsenic, antimony
C. germanium, tellurium
D. all the above

Answer

To determine which elements are classified as metalloids, we can follow these steps:

### Step 1: Understand the Definition of Metalloids
Metalloids are elements that have properties intermediate between metals and non-metals. They typically exhibit a mixture of metallic and non-metallic properties.

### Step 2: Refer to the Modern Periodic Table
To identify metalloids, we need to look at the modern periodic table, which organizes elements based on their atomic number and properties.

### Step 3: Locate the Metalloids on the Periodic Table
The common metalloids found in the periodic table are:
- Boron (B)
- Silicon (Si)
- Germanium (Ge)
- Arsenic (As)
- Antimony (Sb)
- Tellurium (Te)
- Polonium (Po)

### Step 4: Identify the Elements from the Given Pairs
If specific pairs of elements are provided in the question, we need to check if both elements in each pair are among the metalloids listed above.

### Step 5: Conclusion
After identifying the metalloids, we can conclude which pairs contain both elements classified as metalloids.

### Example of Application
If the question provided pairs such as (Boron, Silicon), (Aluminum, Gallium), and (Arsenic, Antimony):
- (Boron, Silicon) - Both are metalloids.
- (Aluminum, Gallium) - Neither is a metalloid.
- (Arsenic, Antimony) - Both are metalloids.

Thus, the pairs that contain both metalloids would be (Boron, Silicon) and (Arsenic, Antimony).

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