Nonmetals
Elements that are poor conductors of heat and electricity. Can exist in various states at room temperature.
Discovery Period: 18th to 20th century
Characteristics
- • Poor conductors
- • Brittle in solid state
- • Gain electrons in reactions
- • Form acidic or neutral oxides
- • Essential for life (C, N, O, P, S)
- • Various physical states at STP