 Lack properties of metals  17 on PT  Many gases at room temperature  Dull  Brittle  Poor conductors.

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Presentation transcript:

 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