Coordination sphere in [Cu(en)3 ]SO4 is:
Correct answer: A. Neutral
- A. Neutral
- B. Positively charged
- C. Negatively charged
- D. Amphoteric
Explanation
This complex is overall neutral because it contains a copper ion with a +2 charge balanced by three ethylenediamine ligands, each contributing a neutral charge.
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About Ionic and Molecular Crystals
Ionic crystals contain oppositely charged ions held by electrostatic forces, whereas molecular crystals contain discrete molecules joined by weaker intermolecular forces. Their structures explain differences in melting point, hardness, volatility, solubility and electrical conductivity, especially between solid and molten states.
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