Problem: How about transition metal ions? How many inner/core and outer/valence electrons are in Fe? a) 18 inner/core and 8 outer and 8 valence b) 28 inner/core and 2 outer and 2 valence c) 18 inner/core and 8 outer and 2 valence d) 18 inner/core and 2 outer and 8 valence

FREE Expert Solution

Electron configuration:

  • Atomic # = # of electrons
  • Fe → atomic # = 26 → 26 e-


Aufbau Principle → from lower energy orbital to higher energy orbital: s < p < d < f



Electron configuration of Fe: 1s22s22p63s23p64s23d6

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Problem Details

How about transition metal ions? How many inner/core and outer/valence electrons are in Fe? 

a) 18 inner/core and 8 outer and 8 valence 

b) 28 inner/core and 2 outer and 2 valence 

c) 18 inner/core and 8 outer and 2 valence 

d) 18 inner/core and 2 outer and 8 valence

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