Question

Write the symbol of the element from which this ion is derived and Write the formula of the oxide this ion forms.

The partial (valence-level) orbital diagram for a 3+ ion is:

Arrow up, arrow down in 4s. 4 arrows up in 3d.

__ __ __ __ __ (3+ ion)

4s 3d 

Answer 1

Element $Fe^{3 +}$

Formula for the oxide ;$Fe_2O_3$