Boron is a

Options

A. metal
B. non-metal
C. semi-metal
D. metalloid

Explanation

To determine the classification of boron, we can follow these steps:

### Step 1: Identify the Atomic Number
Boron has an atomic number of 5. This means it has 5 protons in its nucleus.

**Hint:** The atomic number helps us understand the number of electrons and the element's position in the periodic table.

### Step 2: Determine the Electronic Configuration
The electronic configuration of boron is 1s² 2s² 2p¹. This shows that boron has a total of 5 electrons distributed in its orbitals.

**Hint:** The electronic configuration provides insights into the element's chemical properties and bonding behavior.

### Step 3: Locate Boron in the Periodic Table
Boron is found in Group 13 (or IIIA) of the periodic table, which is part of the p-block elements. The elements in this group include boron, aluminum, gallium, indium, and thallium.

**Hint:** Group classification helps in understanding the general properties of elements.

### Step 4: Classify Boron Based on Its Properties
Boron exhibits properties that are characteristic of non-metals. It is brittle, does not conduct electricity well, and has a high ionization energy.

**Hint:** Physical and chemical properties are key indicators of whether an element is a metal, non-metal, or metalloid.

### Step 5: Conclusion
Based on the above analysis, boron is classified as a non-metal.

**Final Answer:** Boron is a non-metal.

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