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VALENCIAS
Es la capacidad de combinarse y La valencia, es el número de electrones
que tiene un elemento en su último nivel...
SEGÚN LOS GRUPOS
Va desde el IA hasta el VIIIA Es el número positivo que refleja la máxima
capacidad de combinación de un ...
DE LA IA
Caracteristicas metales, 1e en su ultimo nivel, 7e faltantes, adquiere valencia +1
IIA
Caracteristicas metales, 2e en su ultimo nivel, 6e faltantes, adquiere valencia +2
III A
Caracteristicas metales, 3e en su ultimo nivel, 5e faltantes, adquiere valencia +3
IVA
Caracteristicas metaloides , 4e en su ultimo nivel, pierde 4e, adquiere valencia +a
VIA
Caracteristicas no metales, 6e en su ultimo nivel, 2e faltantes, adquiere valencia +6
VII A
 Caracteristicas no metales, 7e en su ultimo nivel, 1e faltantes,
adquiere valencia -1
VIII A
 8e en su ultimo nivel, 0e faltantes valencia caracteristicas gases
nobles
DATOS
Sebastián Calvopiña
1ero «B»
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Valencias

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una introduccion mediana a las valencias quimicas

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Valencias

  1. 1. VALENCIAS Es la capacidad de combinarse y La valencia, es el número de electrones que tiene un elemento en su último nivel de energía, son los que pone en juego durante una reacción química o para establecer un enlace con otro elemento
  2. 2. SEGÚN LOS GRUPOS Va desde el IA hasta el VIIIA Es el número positivo que refleja la máxima capacidad de combinación de un átomo. Este número coincide con el Grupo de la Tabla Periódica al cual pertenece. Por ejemplo: el Cloro (Cl) es del Grupo 7 en la tabla, por lo que su valencia positiva máxima es 7. Valencia negativa solo para el grupo A no para el grupo B: Es el número negativo que refleja la capacidad que tiene un átomo de combinarse con otro pero que esté actuando con valencia positiva. Este número negativo se puede determinar contando lo que le falta a la valencia positiva máxima para llegar a 8, pero con signo -. Por ejemplo: a la valencia máxima positiva del átomo de cloro es 7, por lo que le falta un electrón para cumplir el octeto, entonces su valencia negativa será -1.
  3. 3. DE LA IA Caracteristicas metales, 1e en su ultimo nivel, 7e faltantes, adquiere valencia +1
  4. 4. IIA Caracteristicas metales, 2e en su ultimo nivel, 6e faltantes, adquiere valencia +2
  5. 5. III A Caracteristicas metales, 3e en su ultimo nivel, 5e faltantes, adquiere valencia +3
  6. 6. IVA Caracteristicas metaloides , 4e en su ultimo nivel, pierde 4e, adquiere valencia +a
  7. 7. VIA Caracteristicas no metales, 6e en su ultimo nivel, 2e faltantes, adquiere valencia +6
  8. 8. VII A  Caracteristicas no metales, 7e en su ultimo nivel, 1e faltantes, adquiere valencia -1
  9. 9. VIII A  8e en su ultimo nivel, 0e faltantes valencia caracteristicas gases nobles
  10. 10. DATOS Sebastián Calvopiña 1ero «B»

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