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3 Cards in this Set
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Alkali Metals |
Have low melting and boiling points. Are very soft, and can be cut easily. Have low densities. Are very reactive. Reactivity (least to most): Li, Na, K, Rb, Cs, Fr Are all in Group 1. All have one electron in their outer shell. |
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Halogens |
Have low melting and boiling points.
Are poor conductors of electricity. Give off coloured vapours. Have low densities. Are very reactive. Reactivity (least to most): At, I, Br, Cl, F Are all in Group 7. All have seven electrons in their outer shell. |
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Noble Gases |
Have low boiling points.
Are very unreactive. Reactivity (least to most): He, Ne, Ar, Kr, Xe, Rn Are all in Group 8. All have eight electrons in their outer shell. |
