The correct answer is Option (2) → 5 and $sp^3d$
A trigonal bipyramidal complex has coordination number 5 and sp³d hybridization.
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Trigonal bipyramidal geometry involves five ligand positions around the central atom → coordination number = 5.
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To accommodate five electron pairs, the central atom undergoes sp³d hybridization (one s, three p, and one d orbital).
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Hybridization dsp³ is used for different geometries like square pyramidal or trigonal bipyramidal in some valence bond descriptions, but in standard coordination chemistry for trigonal bipyramidal complexes, it is written as sp³d.
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