The ionic formula for the ionic crystal is Fe₃O₂
Ionic crystals are solid, crystalline ionic substances that are made up of ions linked together in a regular lattice structure by electrostatic attraction.
From the given structure; the key element shows that:
- Fe is denoted by the red electrons, and
- O is denoted by the blue electrons
Therefore, from the diagram, the correct formula of the ionic crystal by considering the lone pairs and valence electrons is Fe₃O₂
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