7.4 Properties of Elements & Compounds
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| PROPERTIES OF TYPES OF COMPOUNDS/SUBSTANCES | |||
|---|---|---|---|
| IONIC | MOLECULAR | NETWORK COVALENT | METALLIC |
| High m.p and b.p.BrittleLattice Energy ∝ q1q2/r | Lower m.p. and b.p. | High m.p. and b.p. Ex. C(diamond) SiO2 | Conduct electricity Conduct heat Luster Malleable Ductile |
| PROPERTIES OF VARIOUS GROUPS FROM THE PERIOD TABLE | |
|---|---|
| Alkali Metals | Highly reactive with water due to low ionization energies |
| Alkaline Earth Metals | Not nearly as reactive with water (increasing reactivity going down the group) |
| Oxides | Metal oxides are basic (examples: Na2O, BaO)Non-metal oxides are acidic (examples: NO2, SO3, CO2) |
| Halogens | Have high (very negative) electron affinities |