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Why are pentahalides more covalent than trihalides in group 15 elements?

Posted- 2357 days ago
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this is because pentahalides have extra stable half filled orbilatal the normal filled

In pentahalides in gp 15 elements there is sp^3d hybridization while in trihalides, it has sp^2 hybridisation. so pentahalides have less s-character than trihalides, so less electronegative; thus are more covalent than trihalides.

it is so because group 15 element have 5 valence elecron and formation of bonds leads to the covalent bonding but in trihalides, it formed ionic bonds due to sharing of electrons.