QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
Choose the correct Lewis electron-dot diagram for an atom of boron.
| 1. | $\cdot \mathrm{B}^{\cdot}$ |
| --- | --- |
| 2. | $\mathrm{B}^{\cdot}$ |
| 3. | $: \mathrm{B}:$ |
| 4. | $: \mathrm{B}^{\cdot}$ |
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Answer
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Step 1: Identify the correct Lewis electron-dot diagram for boron.
Boron is in the third period of the periodic table and has atomic number 5. This means that a neutral boron atom has 5 electrons: 2 in the first energy level and 3 in the second energy level. The Lewis electron-dot diagram for a neutral boron atom should represent this electron configuration.
Step 2: Examine the given options.
Let's analyze the four given options:
Final Answer
The correct Lewis electron-dot diagram for an atom of boron is $: \mathrm{B}:$. This diagram represents a neutral boron atom with 5 electrons, 2 in the first energy level and 3 in the second energy level.
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