Which term describes the region surrounding the nucleus where electrons are most likely to be found?

• A. Neutron zone
• B. Electron cloud
• C. Proton shell
• D. Nuclear core

Answer: (B)

Verified step by step guidance

1. Understand that electrons do not orbit the nucleus in fixed paths like planets around the sun; instead, their positions are described by regions of probability.
2. Recall that the term used to describe the area around the nucleus where electrons are most likely to be found is related to the concept of electron distribution in atoms.
3. Eliminate incorrect options: 'Neutron zone' refers to neutrons inside the nucleus, 'Proton shell' is not a standard term, and 'Nuclear core' refers to the nucleus itself.
4. Recognize that the 'Electron cloud' is the accepted term in chemistry to describe the region around the nucleus where electrons are most likely to be located.
5. Conclude that the correct term describing this region is the 'Electron cloud' because it reflects the probabilistic nature of electron positions around the nucleus.