According to the Band Theory, Which of These Statements Provide(s)

question 28

Multiple Choice

According to the band theory, which of these statements provide(s) an explanation for the high electrical conductivity of metals
I. a partly filled conduction band
II. a valence band overlapping an empty conduction band
III. a filled valence band
IV. a large gap between the valence band and the conduction band

• A) I and II
• B) I and III
• C) III
• D) III and IV
• E) IV

---

Definitions:

Levees

Raised banks or barriers constructed along rivers or other water bodies to protect land from flooding and manage water flow.

Water Stress

A condition where the demand for water exceeds the available amount during a certain period or when poor quality restricts its use.

Water Worldwide

Refers to the global distribution, availability, and management of freshwater resources essential for human consumption, agriculture, and ecosystems.