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The ions of NaF and MgO have the same nu...

The ions of NaF and MgO have the same number of electrons and inter nuclear distances are about the same (235 pm and 215 pm). Why are then the melting points of NaF and MgO so different `(992^(@)C and 2642^(@)C)`?

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To understand why the melting points of NaF (sodium fluoride) and MgO (magnesium oxide) are so different despite having the same number of electrons and similar inter-nuclear distances, we can analyze the factors affecting their melting points step by step. ### Step-by-Step Solution: 1. **Identify the Ions and Their Charges:** - Sodium fluoride (NaF) consists of Na⁺ and F⁻ ions. - Magnesium oxide (MgO) consists of Mg²⁺ and O²⁻ ions. ...
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Why the melting points of NaF and MgO (990^(@)C and 2640^(@)C ) are so different although both have same number of electrons and nearly the same internuclear distance (236 pm and 216 pm)?

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