Respuesta :

ambergoat
Chromium (Cr): 2, 8, 8, 6
Copper (Cu): 2, 8, 8, 11
Chromium+2 (Cr+2): 2, 8, 8, 4 (if the ion retains a positive charge then the amount of electrons will decrease)
Copper+2 (Cu+2): 2, 8, 8, 9
Manganese+2 (Mn+2): 2, 8, 8, 5
mportill0
The electron configuration for the following elements and ions:
Cr 2-8-13-1
Cu 2-8-18-1
Cr+2 2-8-12
Cu+2 2-8-17
Mn+2 2-8-13

a positive sign next to an atom indicates that it lost electrons.
a negative sign indicates that it gained electrons

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