Give two examples of valency expanded molecule. What is the basic requirement for an element to form valency expanded molecule?
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Another Explanation (5):
Two examples of valency-expanded molecules are:
- SF6 (sulfur hexafluoride)
- PCl5 (phosphorus pentachloride)
The basic requirement for an element to form a valency-expanded molecule is that it must have d orbitals available in its valence shell to accommodate more than eight electrons.