Question

5 switch the model from \orbits\ to \cloud.\ even though the cloud model is more accurate, the orbit model—or bohr model—is used more often. why?
a the bohr model uses a more accurate scale
b the bohr model provides less detail than the cloud model
c the bohr model makes it easier to count electrons
d the bohr model makes it easier to identify the nucleus

Explanation:

• Option A: The cloud model is more accurate, so Bohr model doesn't have a more accurate scale. Eliminate A.
• Option B: Less detail would not be a reason to use it more. Eliminate B.
• Option C: The Bohr model shows electrons in distinct orbits, which makes counting electrons (like valence electrons for bonding, etc.) easier compared to the cloud model (where electrons are in a probability cloud). This makes it useful for many basic chemistry/atomic structure applications.
• Option D: Both models show the nucleus clearly, so this isn't a reason. Eliminate D.

Answer:

C. The Bohr model makes it easier to count electrons