Electrical Engineering XYZ MCQs
The outermost orbit of an atom is also known as:
- Energy band
- Valence orbit
- Conduction band
- None of the above
Correct answer: 2. Valence band
Explanation: The outermost orbit of an atom is called the valence orbit. This orbit is significant because it determines the atom’s chemical properties, particularly its ability to form chemical bonds with other atoms. The electrons in the valence orbit are involved in bonding interactions, either by sharing electrons with other atoms (covalent bonds) or by transferring electrons to form ions (ionic bonds). Understanding the structure and behavior of electrons in the valence orbit is crucial in chemistry for predicting and explaining various chemical phenomena.
The other options, “Energy band” and “Conduction band,” are terminologies commonly used in solid-state physics to describe the distribution of energy levels in a solid material, particularly in semiconductors and insulators. These concepts are not directly related to the orbits of individual atoms. Therefore, they are not the correct answers in the context of the question.