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| Question | Answer |
| what creates the effect of anomalous behaviour? | 1.Size 2. Sheilding 3.Orbital availability |
| What do, size, shielding and orbital availability effect? | 1.Electronegativity values 2.Co-ordination number 3.reactivity and extent of chemistry. |
| What is orbital availability? | The ability to form a dative covalent bond in the higher energy, vacant d-orbital. not available to elements Li-F. |
| Why does 'N' only have co-ordination numbers of 3 or 4? | First row of elements are restriced to an octet of electrons, they can only use S+P orbitals not the vacant 'd' orbital. |
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