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Sumario Resumen enlaces 4º ESO

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resumen de enlaces de 4º ESO

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RESUMEN FYQ

1 REGLA DEL OCTETO

Todos los elementos aspiran a tener en su última capa los mismos electrones que un gas noble (8:
ns2 np6)

2 ENLACE IÓNICO

Metal + No metal



Propiedades

- Sólidos con aspecto de sal
- Puntos fusión y ebullición altos
- Solubles en agua
- No conducen electricidad pero sí cuando están disueltos o fundidos

3 ENLACE COVALENTE

No metal + No metal

Diagrama de Lewis

Representación de como se organizan átomos y electrones en compuesto covalente

Ej: estructura de Lewis del CCl4

ÁTOMOS CONF. ELECTRÓNICA e- EN CAPA VALENCIA CAPACIDAD CV
C 1s2 2s2 2p2 4 8
Cl 1s2 2s2 2p6 3s2 3p5 7x4=28 8x4=32
Tot: 32e-
Tot: 40e-

e- enlazados= capacidad C.V – e- C.V= 40-32= 8 e- (4 enlaces)

e- no enlazados= e- C.V – e- enlazados = 32-8=24 e-

Cl

Cl C Cl

Cl

Propiedades

Covalentes moleculares

- Se organizan en moléculas
- Suelen ser líquidos o gaseosos a temperatura ambiente

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Institution
Secondary school
Study
ESO
Module
School year
4

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Uploaded on
February 5, 2023
Number of pages
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Written in
2021/2022
Type
SUMMARY

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