| 11. | The hapticity describes the number of carbon monoxide ligands, which are directly bonded to the central atom.
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| 12. | By adding electronegative substituents and changing the hybridisation of the central atoms, bond lengths can be manipulated.
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| 13. | There is reason to believe that this central atom is an amine which functions as a Lewis base.
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| 14. | Bond lengths and charge densities are shown as functions of how many hydride ligands are on the central atoms.
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| 15. | With the same central atom X, acid strength increases as the number of oxygens attached to X increases.
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| 16. | If the central atom X is strongly electronegative, then it strongly attracts the electrons of the oxygen atom.
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| 17. | When the surrounding ligands are much smaller than the central atom, even higher coordination numbers may be possible.
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| 18. | The three atoms bond at 90?angles on one side of the central atom, producing the T shape.
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| 19. | The latter are stabilized by more fluorine atoms and lighter central atoms, so sulfur hexafluoride is especially inert.
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| 20. | Rather, the electronegativity of the central atom ( X ) and the number of O atoms determine oxoacid acidity.
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