Lack properties of metals 17 on PT Many gases at room temperature Dull Brittle Poor conductors
7. Form compounds 8. Group 18 do not make compounds 9. Diatomic molecules- two identical atoms (O2)
Carbon family- Group valence electrons Nitrogen family- Group valence electrons Oxygen family- Group valence electrons Oxygen can combine with most elements Halogen Family- Group valence electrons Noble gases- Group 18- do not gain or loose valence electrons Hydrogen- simplest element- not grouped
Seven elements some characteristics of metals and nonmetals Ability to conduct electricity Semiconductors- some conditions can carry electricity