Answer
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Step 1:I'll solve this problem by discussing the key properties of nonmetals systematically:
Step 2:: Physical State
Nonmetals typically exist in multiple physical states at room temperature: - Gases (e.g., oxygen, nitrogen) - Solids (e.g., carbon, sulfur) - Some rare liquid nonmetals (e.g., bromine)
Step 3:: Electrical Conductivity
Nonmetals are poor electrical conductors: - Low electrical conductivity - High electrical resistance - Cannot transmit electric current easily
Step 4:: Thermal Conductivity
Nonmetals have low thermal conductivity: - Poor heat transfer capabilities - Serve as good insulators - Resist temperature transmission
Step 5:: Physical Appearance
Nonmetals generally have distinct physical characteristics: - Dull or non-shiny surfaces - Brittle and fragile structures - Often appear in powdery or granular forms
Step 6:: Chemical Reactivity
Nonmetals demonstrate high chemical reactivity: - Tend to gain electrons - Form negative ions (anions) - Readily combine with metals to create compounds - High electronegativity
Final Answer
The most common properties of nonmetals are low electrical and thermal conductivity, poor heat transmission, brittle physical structure, and high chemical reactivity with tendency to gain electrons.
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